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Power Macintosh 6500 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:51 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 147:		Line 147:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Power Macintosh 6500 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Power Macintosh 6500 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Power Macintosh 6100 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:50 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 149:		Line 149:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Power Macintosh 6100 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Power Macintosh 6100 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh TV Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:49 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 216:		Line 216:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh TV logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh TV backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Analog board and CRT ===

			As an all-in-one, the Macintosh TV carries an analog/CRT board with a flyback and a high-voltage section. A clicking or ticking board, no raster, or a dead set with no CRT glow point there rather than to the logic board. Observe CRT discharge safety before working inside.

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Quadra 900 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:48 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 237:		Line 237:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Quadra 900 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. Apple fitted tantalum capacitors on the Macintosh Quadra 900 logic board, so board-level leakage is unusual on this model, but the electrolytic supply still needs it. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Quadra 900 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Quadra 840AV Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:47 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 264:		Line 264:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Quadra 840AV logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Quadra 840AV backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Quadra 800 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:46 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 228:		Line 228:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Quadra 800 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Quadra 800 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Quadra 700 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:39 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 207:		Line 207:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Quadra 700 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. Apple fitted tantalum capacitors on the Macintosh Quadra 700 logic board, so board-level leakage is unusual on this model, but the electrolytic supply still needs it. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Quadra 700 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Quadra 605 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:38 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 222:		Line 222:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Quadra 605 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Quadra 605 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Performa 5400 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:37 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 166:		Line 166:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Performa 5400 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Performa 5400 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Analog board and CRT ===

			As an all-in-one, the Macintosh Performa 5400 carries an analog/CRT board with a flyback and a high-voltage section. A clicking or ticking board, no raster, or a dead set with no CRT glow point there rather than to the logic board. Observe CRT discharge safety before working inside.

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Performa 5200CD Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:36 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 209:		Line 209:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Performa 5200CD logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Performa 5200CD backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Analog board and CRT ===

			As an all-in-one, the Macintosh Performa 5200CD carries an analog/CRT board with a flyback and a high-voltage section. A clicking or ticking board, no raster, or a dead set with no CRT glow point there rather than to the logic board. Observe CRT discharge safety before working inside.

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh LC Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:35 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 162:		Line 162:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh LC III+ Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:34 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 166:		Line 166:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC III+ logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC III+ backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh LC III Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:30 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 172:		Line 172:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC III logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC III backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh LC II Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:29 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 160:		Line 160:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC II logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC II backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh LC 630 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:29 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

@@ Line 353: / Line 353: @@
 # Inspect for capacitor leakage
 # Test with known-good peripherals
 == Related Pages ==
@@ Line 363: / Line 377: @@
 * [[Macintosh Floppy Drive Maintenance]]
 [[Category:Apple Vintage Computers]]
 [[Category:Apple Troubleshooting Guides]]

Macintosh LC 630 DOS Compatible Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:28 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 10:		Line 10:

	As with the LC 630, check the '''PRAM battery''' for leakage and corrosion, '''recap''' where needed, and confirm the power-supply rails. Full detail is on '''[[Macintosh LC 630 Troubleshooting]]'''.		As with the LC 630, check the '''PRAM battery''' for leakage and corrosion, '''recap''' where needed, and confirm the power-supply rails. Full detail is on '''[[Macintosh LC 630 Troubleshooting]]'''.

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC 630 DOS Compatible logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC 630 DOS Compatible backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related pages ==		== Related pages ==

Macintosh LC 475 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:27 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 170:		Line 170:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh LC 475 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh LC 475 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh IIvx Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:26 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 186:		Line 186:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh IIvx logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh IIvx backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh IIvi Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:25 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 151:		Line 151:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh IIvi logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh IIvi backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh IIsi Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:21 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 184:		Line 184:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh IIsi logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh IIsi backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Sound loss and video ===

			The IIsi blanks its sound when the sprung metal fingers linking the speaker to the logic board oxidise, often only after the machine has warmed up for a while — clean those contacts. The audio-filter capacitors in the north-west corner of the board are a second cause of lost or distorted sound. For a no-video IIsi, check the PRAM battery before chasing the video path.<ref name="iisi">[https://stason.org/TULARC/os-macintosh/hardware/32-How-can-I-fix-the-sound-on-my-IISI-Macintosh-hardware.html How can I fix the sound on my IIsi?], TULARC; and the [https://www.ifixit.com/Device/Macintosh_IIsi Macintosh IIsi] device page, iFixit. Source for the oxidised speaker-contact sound blanking, the north-west-corner audio filter caps, and the check-the-PRAM-battery-first video guidance.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Color Classic Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:19 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

@@ Line 312: / Line 312: @@
 * Keep fire extinguisher accessible
 * Never bypass safety interlocks
 == Related Pages ==

Macintosh Color Classic II Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:18 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 205:		Line 205:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Color Classic II logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Color Classic II backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Analog board ===

			On the all-in-one Macintosh Color Classic II the analog board is the usual failure. The DL21/DL22 18 V 1 W zeners overheat and char the PCB, the RL62 47 Ω 3 W resistor burns open, and the main filter capacitors drift and make the rails unstable. A dead set with no fan and no CRT glow, or a set that powers on the instant mains is applied (a soft-power fault), points here; a clicking or ticking analog board is a failing flyback. Four capacitors around the PLCC sound chip cause lost sound.<ref name="cc">[https://tinkerdifferent.com/threads/color-classic-analog-board-trouble.2367/ Color Classic analog board trouble], TinkerDifferent; and iFixit. Source for the DL21/DL22 18 V 1 W zeners charring the PCB, the RL62 47 Ω 3 W resistor going open, the flyback clicking/ticking, and the four capacitors around the PLCC sound chip.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Centris 660AV Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:17 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 215:		Line 215:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Centris 660AV logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Centris 660AV backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Centris 650 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:16 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 217:		Line 217:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Centris 650 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Centris 650 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

Macintosh Centris 610 Troubleshooting

Josh — Thu, 16 Jul 2026 12:21:14 GMT

Deep dive: SMD cap leakage signatures, PRAM battery, analog/sound specifics, chime/Sad Mac; cited

← Older revision		Revision as of 13:21, 16 July 2026
Line 163:		Line 163:

	<references />		<references />

			== Component-level faults (deep dive) ==

			=== Surface-mount capacitor leakage ===

			The Macintosh Centris 610 logic board uses surface-mount electrolytic capacitors whose electrolyte turns corrosive with age and creeps across the board, eating through traces, pads and IC pins. Typical signatures are a machine that will not chime, chimes but shows no video, plays distorted or missing audio, or shows a garbled or checkerboard screen. Wash the affected area and replace every electrolytic with a tantalum or polymer part, then repair any lifted traces. The switch-mode power supply (ASTEC or TDK on the LC-family machines) holds its own electrolytics and fails the same way, so recap it alongside the board.<ref name="caps">Mac84, [https://mac84.net/web/macintosh-lc-series-lc-lc-ii-lc-iii-power-supply-recapping-guide-astec-usa/ Macintosh LC series power-supply recapping guide]; the [http://www.maccaps.com/MacCaps/Capacitor_Reference/Capacitor_Reference.html MacCaps capacitor reference]; and iFixit. Source for surface-mount electrolytic leakage eating traces, pads and pins, the ASTEC/TDK LC power-supply cap failures, and Apple's use of tantalum (non-leaking) capacitors on the Quadra 700/900 logic boards.</ref>

			=== PRAM battery ===

			The Macintosh Centris 610 backs up its clock and Parameter RAM from a 3.6 V ½AA lithium cell. These cells — red Maxell parts especially — leak or burst and corrode the board, so remove an aged one on sight. A flat cell can also stop a soft-power machine booting or disturb the video; left plugged in, trickle power preserves the settings, but a machine switched off at the wall with a dead cell loses them. Clean the area and fit a fresh 3.6 V cell.<ref name="pram">[https://68kmla.org/bb/threads/warning-exploding-maxell-pram-batteries.25169/ Warning! Exploding Maxell PRAM batteries], 68kMLA; and [https://www.macdat.net/repair/kb/batteries_macintosh.html Mac Battery Leaks], MacDat. Source for the 3.6 V ½AA lithium PRAM cell, the Maxell leak/explosion board damage, and soft- versus hard-power PRAM retention.</ref>

			=== Boot chime and Sad Mac ===

			Read the start-up sound first: a normal chime with a black screen points to the display path or the monitor, an absent chime or a "chord of death" points to RAM or a core fault, and a Sad Mac shows a numeric code — see [[Sad Mac Error Codes]].

	== Related Pages ==		== Related Pages ==

File:Macintosh Performa 450 (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:56 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Macintosh Performa 450, used to illustrate the [[Macintosh Performa 450 Troubleshooting]].		Photograph of the Macintosh Performa 450, used to illustrate the [[Macintosh Performa 450 Troubleshooting]].

	Source: https://commons.wikimedia.org/wiki/File:~~Apple_Macintosh_Performa_450_PSU_repair~~.~~webm~~		Source: https://commons.wikimedia.org/wiki/File:Macintosh_LC_III_front.jpg

	Author: ~~Nitton Åttiofyra~~		Author: Stephen Edmonds

	License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0)		License: CC BY-SA 2.5 (https://creativecommons.org/licenses/by-sa/2.5)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Amstrad CPC 664 (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:56 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Amstrad CPC 664, used to illustrate the [[Amstrad CPC 664 Troubleshooting Guide]].		Photograph of the Amstrad CPC 664, used to illustrate the [[Amstrad CPC 664 Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Amstrad_CPC464~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Amstrad_CPC_664_with_colour_monitor.jpg

	Author: ~~Bill Bertram~~		Author: Flamelilyit

	License: CC BY-SA 2.5 (https://creativecommons.org/licenses/by-sa/2.5)		License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:BBC Micro B+ (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:55 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the BBC Micro B+, used to illustrate the [[BBC Micro B+ Troubleshooting Guide]].		Photograph of the BBC Micro B+, used to illustrate the [[BBC Micro B+ Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Jsc2023e054808_(7-2-2023)_---_The_Astro_Bit_payload_is_a_BBC_micro-bit_microcontroller_v2~~.jpg		Source: https://commons.wikimedia.org/wiki/File:BBC_Micro_Front_Restored.jpg

	Author: ~~NASA Johnson Space Center~~		Author: BBC_Micro.jpeg: Stuart Brady
			derivative work: Ubcule (talk)

	License: Public domain		License: Public domain

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Commodore 64C (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:55 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Commodore 64C, used to illustrate the [[Commodore 64C Troubleshooting Guide]].		Photograph of the Commodore 64C, used to illustrate the [[Commodore 64C Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Commodore~~-~~64-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Commodore_64C_-_PD.jpg

	Author: ~~Evan-Amos~~		Author: Piotr Doroszewski

	License: ~~Public domain~~		License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 800XE (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:54 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 800XE, used to illustrate the [[Atari 800XE Troubleshooting Guide]].		Photograph of the Atari 800XE, used to illustrate the [[Atari 800XE Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Atari-800-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari_800_XE_players.jpg

	Author: ~~Evan-Amos~~		Author: Kriplozoik

	License: Public domain		License: Public domain

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 65XE (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:54 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 65XE, used to illustrate the [[Atari 65XE Troubleshooting Guide]].		Photograph of the Atari 65XE, used to illustrate the [[Atari 65XE Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Atari-800-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari_65XE_A74007020250206.jpg

	Author: ~~Evan-Amos~~		Author: Rjcastillo

	License: ~~Public domain~~		License: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 600XL (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:53 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 600XL, used to illustrate the [[Atari 600XL Troubleshooting Guide]].		Photograph of the Atari 600XL, used to illustrate the [[Atari 600XL Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:Atari-~~800~~-~~Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari-600XL-PC.jpg

	Author: Evan-Amos		Author: Evan-Amos

	License: ~~Public domain~~		License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 400 (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:53 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 400, used to illustrate the [[Atari 400 Troubleshooting Guide]].		Photograph of the Atari 400, used to illustrate the [[Atari 400 Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Atari~~-~~800-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari_400-IMG_7248.jpg

	Author: ~~Evan-Amos~~		Author: Rama & Musée Bolo

	License: ~~Public domain~~		License: CC BY-SA 2.0 fr (https://creativecommons.org/licenses/by-sa/2.0/fr/deed.en)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 130XE (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:52 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 130XE, used to illustrate the [[Atari 130XE Troubleshooting Guide]].		Photograph of the Atari 130XE, used to illustrate the [[Atari 130XE Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:Atari-~~800-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari-130XE.jpg

	Author: Evan-Amos		Author: Evan-Amos

	License: ~~Public domain~~		License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

File:Atari 1200XL (photo).jpg

Josh — Thu, 16 Jul 2026 12:16:52 GMT

Correct citation to match the actual current image

← Older revision		Revision as of 13:16, 16 July 2026
Line 1:		Line 1:
	Photograph of the Atari 1200XL, used to illustrate the [[Atari 1200XL Troubleshooting Guide]].		Photograph of the Atari 1200XL, used to illustrate the [[Atari 1200XL Troubleshooting Guide]].

	Source: https://commons.wikimedia.org/wiki/File:~~Atari-800-Computer-FL~~.jpg		Source: https://commons.wikimedia.org/wiki/File:Atari_1200XL.jpg

	Author: ~~Evan-Amos~~		Author: TCMI_Atari1200XL.jpg: Daniel Schwen
			derivative work: Ubcule (talk)

	License: ~~Public domain~~		License: CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)

	[[Category:Troubleshooting Guide Images]]		[[Category:Troubleshooting Guide Images]]

IBM PC XT/370 Troubleshooting Guide

Josh — Thu, 16 Jul 2026 12:11:18 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:11, 16 July 2026
Line 112:		Line 112:

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:IBM PC XT-370 (photo).jpg\|thumb\|right\|300px\|IBM PC XT/370. Source: Wikimedia Commons.]]
	{\| class="wikitable styled-table" style="width:85%; text-align:left;"		{\| class="wikitable styled-table" style="width:85%; text-align:left;"
	\|+'''IBM POST beep codes'''		\|+'''IBM POST beep codes'''

File:IBM PC XT-370 (photo).jpg

Josh — Thu, 16 Jul 2026 12:11:17 GMT

Josh uploaded File:IBM PC XT-370 (photo).jpg Photograph of the IBM PC XT/370, used to illustrate the IBM PC XT/370 Troubleshooting Guide. Source: https://commons.wikimedia.org/wiki/File:IBM_PC_XT_color.jpg Author: Ruben de Rijcke - http://dendmedia.com/vintage/ License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0) Category:Troubleshooting Guide Images

New page

Photograph of the IBM PC XT/370, used to illustrate the [[IBM PC XT/370 Troubleshooting Guide]].

Source: https://commons.wikimedia.org/wiki/File:IBM_PC_XT_color.jpg

Author: Ruben de Rijcke - http://dendmedia.com/vintage/

License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0)

[[Category:Troubleshooting Guide Images]]

Macintosh Performa 5400 Troubleshooting

Josh — Thu, 16 Jul 2026 12:11:14 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:11, 16 July 2026
Line 13:		Line 13:

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:Macintosh Performa 5400 (photo).jpg\|thumb\|right\|300px\|Macintosh Performa 5400. Source: Wikimedia Commons.]]
	{\| class="wikitable styled-table" style="width:100%; text-align:center;"		{\| class="wikitable styled-table" style="width:100%; text-align:center;"
	\|+ '''Power Issues'''		\|+ '''Power Issues'''

File:Macintosh Performa 5400 (photo).jpg

Josh — Thu, 16 Jul 2026 12:11:12 GMT

Josh uploaded File:Macintosh Performa 5400 (photo).jpg Photograph of the Macintosh Performa 5400, used to illustrate the Macintosh Performa 5400 Troubleshooting. Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_5500.jpg Author: see source page License: Copyrighted free use Category:Troubleshooting Guide Images

New page

Photograph of the Macintosh Performa 5400, used to illustrate the [[Macintosh Performa 5400 Troubleshooting]].

Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_5500.jpg

Author: see source page

License: Copyrighted free use

[[Category:Troubleshooting Guide Images]]

File:Macintosh Performa 450 (photo).jpg

Josh — Thu, 16 Jul 2026 12:11:09 GMT

Josh uploaded a new version of File:Macintosh Performa 450 (photo).jpg Photograph of the Macintosh Performa 450, used to illustrate the Macintosh Performa 450 Troubleshooting. Source: https://commons.wikimedia.org/wiki/File:Macintosh_LC_III_front.jpg Author: Stephen Edmonds License: CC BY-SA 2.5 (https://creativecommons.org/licenses/by-sa/2.5) Category:Troubleshooting Guide Images

New page

Photograph of the Macintosh Performa 450, used to illustrate the [[Macintosh Performa 450 Troubleshooting]].

Source: https://commons.wikimedia.org/wiki/File:Apple_Macintosh_Performa_450_PSU_repair.webm

Author: Nitton Åttiofyra

License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0)

[[Category:Troubleshooting Guide Images]]

Super Famicom Troubleshooting Guide

Josh — Thu, 16 Jul 2026 12:10:30 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:10, 16 July 2026
Line 1:		Line 1:
	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:Super Famicom (photo).jpg\|thumb\|right\|300px\|Super Famicom. Source: Wikimedia Commons.]]

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />

File:Super Famicom (photo).jpg

Josh — Thu, 16 Jul 2026 12:10:29 GMT

Josh uploaded File:Super Famicom (photo).jpg Photograph of the Super Famicom, used to illustrate the Super Famicom Troubleshooting Guide. Source: https://commons.wikimedia.org/wiki/File:Nintendo-Super-Famicom-Set-FL.jpg Author: Evan-Amos License: Public domain Category:Troubleshooting Guide Images

New page

Photograph of the Super Famicom, used to illustrate the [[Super Famicom Troubleshooting Guide]].

Source: https://commons.wikimedia.org/wiki/File:Nintendo-Super-Famicom-Set-FL.jpg

Author: Evan-Amos

License: Public domain

[[Category:Troubleshooting Guide Images]]

Power Macintosh 6500 Troubleshooting

Josh — Thu, 16 Jul 2026 12:10:25 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:10, 16 July 2026
Line 12:		Line 12:

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:Power Macintosh 6500 (photo).jpg\|thumb\|right\|300px\|Power Macintosh 6500. Source: Wikimedia Commons.]]
	{\| class="wikitable styled-table" style="width:100%; text-align:center;"		{\| class="wikitable styled-table" style="width:100%; text-align:center;"
	\|+ '''Power Issues'''		\|+ '''Power Issues'''

File:Power Macintosh 6500 (photo).jpg

Josh — Thu, 16 Jul 2026 12:10:24 GMT

Josh uploaded File:Power Macintosh 6500 (photo).jpg Photograph of the Power Macintosh 6500, used to illustrate the Power Macintosh 6500 Troubleshooting. Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_6500.png Author: Ben Boldt License: Public domain Category:Troubleshooting Guide Images

New page

Photograph of the Power Macintosh 6500, used to illustrate the [[Power Macintosh 6500 Troubleshooting]].

Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_6500.png

Author: Ben Boldt

License: Public domain

[[Category:Troubleshooting Guide Images]]

Power Macintosh 6100 Troubleshooting

Josh — Thu, 16 Jul 2026 12:10:21 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:10, 16 July 2026
Line 13:		Line 13:

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:Power Macintosh 6100 (photo).jpg\|thumb\|right\|300px\|Power Macintosh 6100. Source: Wikimedia Commons.]]
	{\| class="wikitable styled-table" style="width:100%; text-align:center;"		{\| class="wikitable styled-table" style="width:100%; text-align:center;"
	\|+ '''Power Issues'''		\|+ '''Power Issues'''

File:Power Macintosh 6100 (photo).jpg

Josh — Thu, 16 Jul 2026 12:10:19 GMT

Josh uploaded File:Power Macintosh 6100 (photo).jpg Photograph of the Power Macintosh 6100, used to illustrate the Power Macintosh 6100 Troubleshooting. Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_6100-60AV_-_front.jpg Author: MIKI Yoshihito License: CC BY 2.0 (https://creativecommons.org/licenses/by/2.0) Category:Troubleshooting Guide Images

New page

Photograph of the Power Macintosh 6100, used to illustrate the [[Power Macintosh 6100 Troubleshooting]].

Source: https://commons.wikimedia.org/wiki/File:Power_Macintosh_6100-60AV_-_front.jpg

Author: MIKI Yoshihito

License: CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)

[[Category:Troubleshooting Guide Images]]

Osborne 1 Troubleshooting Guide

Josh — Thu, 16 Jul 2026 12:10:16 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

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			[[File:Osborne 1 (photo).jpg\|thumb\|right\|300px\|Osborne 1. Source: Wikimedia Commons.]]

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />

File:Osborne 1 (photo).jpg

Josh — Thu, 16 Jul 2026 12:10:16 GMT

Josh uploaded File:Osborne 1 (photo).jpg Photograph of the Osborne 1, used to illustrate the Osborne 1 Troubleshooting Guide. Source: https://commons.wikimedia.org/wiki/File:Osborne_1_open.jpg Author: Bilby License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0) Category:Troubleshooting Guide Images

New page

Photograph of the Osborne 1, used to illustrate the [[Osborne 1 Troubleshooting Guide]].

Source: https://commons.wikimedia.org/wiki/File:Osborne_1_open.jpg

Author: Bilby

License: CC BY 3.0 (https://creativecommons.org/licenses/by/3.0)

[[Category:Troubleshooting Guide Images]]

Nintendo GameCube Troubleshooting Guide

Josh — Thu, 16 Jul 2026 12:10:13 GMT

Add representative photo (Wikimedia Commons, attributed on file page)

← Older revision		Revision as of 13:10, 16 July 2026
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	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
			[[File:Nintendo GameCube (photo).jpg\|thumb\|right\|300px\|Nintendo GameCube. Source: Wikimedia Commons.]]

	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />

File:Nintendo GameCube (photo).jpg

Josh — Thu, 16 Jul 2026 12:10:12 GMT

Josh uploaded File:Nintendo GameCube (photo).jpg Photograph of the Nintendo GameCube, used to illustrate the Nintendo GameCube Troubleshooting Guide. Source: https://commons.wikimedia.org/wiki/File:GameCube-Console-Set.png Author: Evan-Amos License: Public domain Category:Troubleshooting Guide Images

New page

Photograph of the Nintendo GameCube, used to illustrate the [[Nintendo GameCube Troubleshooting Guide]].

Source: https://commons.wikimedia.org/wiki/File:GameCube-Console-Set.png

Author: Evan-Amos

License: Public domain

[[Category:Troubleshooting Guide Images]]