Macintosh IIvi Capacitor Replacement Guide - Revision history

Josh: Rewrite: Recap-a-Mac values and parts, Console5 kit, Macworld same-board source; Apple take-apart steps; PSU is 661-0758, list on Centris 650 guide; remove 68kMLA shared-form-factor claim (IIci/IIcx/Q700 do not use this supply), 100-120 V different-supply claim, generic procedure padding and tombstoned category

2026-09-30T15:14:42Z

Rewrite: Recap-a-Mac values and parts, Console5 kit, Macworld same-board source; Apple take-apart steps; PSU is 661-0758, list on Centris 650 guide; remove 68kMLA shared-form-factor claim (IIci/IIcx/Q700 do not use this supply), 100-120 V different-supply claim, generic procedure padding and tombstoned category

Show changes

Josh: House rule: reword in-article correction narratives so they describe the claim in circulation and what the source says, rather than the page's own edit history. The corrections themselves are recorded in the edit summaries

2026-09-27T11:40:21Z

House rule: reword in-article correction narratives so they describe the claim in circulation and what the source says, rather than the page's own edit history. The corrections themselves are recorded in the edit summaries

← Older revision		Revision as of 12:40, 27 September 2026
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	'''Apple's own figures for this machine are 200 W at the A/C line input and 112 W of DC output'''<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx/IIvi/Performa 600 Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>;		'''Apple's own figures for this machine are 200 W at the A/C line input and 112 W of DC output'''<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx/IIvi/Performa 600 Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>;
	a "230 W" rating ~~was previously given here~~ and is the Macintosh IIfx's number.		a "230 W" rating circulates for this machine and is the Macintosh IIfx's number.

	'''Check which mains variant you have before ordering primary-side parts.''' Apple prints the		'''Check which mains variant you have before ordering primary-side parts.''' Apple prints the

Josh: Point the Service Source citation at the newly created documentation page for the Macintosh IIvx/IIvi/Performa 600 volume

2026-09-27T11:20:09Z

Point the Service Source citation at the newly created documentation page for the Macintosh IIvx/IIvi/Performa 600 volume

← Older revision		Revision as of 12:20, 27 September 2026
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	Consult the specific power supply label for capacitor values. Common values include high-voltage primary capacitors (200V–400V) and secondary filter capacitors.		Consult the specific power supply label for capacitor values. Common values include high-voltage primary capacitors (200V–400V) and secondary filter capacitors.

	'''Apple's own figures for this machine are 200 W at the A/C line input and 112 W of DC output'''<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>;		'''Apple's own figures for this machine are 200 W at the A/C line input and 112 W of DC output'''<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx/IIvi/Performa 600 Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>;
	a "230 W" rating was previously given here and is the Macintosh IIfx's number.		a "230 W" rating was previously given here and is the Macintosh IIfx's number.

Josh: Red-link sweep: de-link or retarget internal links to pages that do not exist on this wiki

2026-09-27T11:16:05Z

Red-link sweep: de-link or retarget internal links to pages that do not exist on this wiki

← Older revision		Revision as of 12:16, 27 September 2026
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	The '''Macintosh IIvi''' logic board contains surface-mount electrolytic capacitors that leak after 30+ years. This guide provides capacitor specifications and replacement procedures.		The '''Macintosh IIvi''' logic board contains surface-mount electrolytic capacitors that leak after 30+ years. This guide provides capacitor specifications and replacement procedures.

	The IIvi, [[Macintosh IIvx]], and [[Performa 600]] share the same logic board design, so capacitor specifications are identical.<ref>{{cite web \|url=https://recapamac.com.au/macintosh-iivi/ \|title=Macintosh IIvi \|publisher=Recap-a-Mac \|access-date=2026-02-09}}</ref>		The IIvi, [[Macintosh IIvx]], and Performa 600 share the same logic board design, so capacitor specifications are identical.<ref>{{cite web \|url=https://recapamac.com.au/macintosh-iivi/ \|title=Macintosh IIvi \|publisher=Recap-a-Mac \|access-date=2026-02-09}}</ref>

	== Why Recap? ==		== Why Recap? ==

Josh: Correct the '230 W power supply' (that is the Macintosh IIfx figure) to Apple's 200 W A/C line input and 112 W DC; warn that Apple's line input for this machine is 100-120 VAC and that the 100-240 V figure belongs to the switched monitor outlet, so the primary-side parts differ between mains variants; replace the generic discharge warning with the real hazard

2026-09-27T11:13:50Z

Correct the '230 W power supply' (that is the Macintosh IIfx figure) to Apple's 200 W A/C line input and 112 W DC; warn that Apple's line input for this machine is 100-120 VAC and that the 100-240 V figure belongs to the switched monitor outlet, so the primary-side parts differ between mains variants; replace the generic discharge warning with the real hazard

← Older revision		Revision as of 12:13, 27 September 2026
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	== Power Supply Capacitors ==		== Power Supply Capacitors ==

	The IIvi ~~uses a 230W power~~ supply shared ~~with~~ the IIci, IIcx, IIvx, Performa 600, Centris 650, and Quadra 700. Power supply capacitors vary by manufacturer (Sony, Astec, Delta).<ref>{{cite web \|url=https://68kmla.org/forums/topic/59718-compact-desktop-power-supply-capacitor-lists-by-make-and-model/ \|title=Compact Desktop Power Supply Capacitor Lists \|publisher=68kMLA \|access-date=2026-02-09}}</ref>		The IIvi supply is the shared desktop form factor also used in the IIci, IIcx, IIvx, Performa 600, Centris 650, and Quadra 700. Power supply capacitors vary by manufacturer (Sony, Astec, Delta).<ref>{{cite web \|url=https://68kmla.org/forums/topic/59718-compact-desktop-power-supply-capacitor-lists-by-make-and-model/ \|title=Compact Desktop Power Supply Capacitor Lists \|publisher=68kMLA \|access-date=2026-02-09}}</ref>

	Consult the specific power supply label for capacitor values. Common values include high-voltage primary capacitors (200V–400V) and secondary filter capacitors.		Consult the specific power supply label for capacitor values. Common values include high-voltage primary capacitors (200V–400V) and secondary filter capacitors.

	'''~~Warning~~:''' ~~Power supplies contain high~~-voltage ~~capacitors~~. Discharge before ~~servicing~~.		'''Apple's own figures for this machine are 200 W at the A/C line input and 112 W of DC output'''<ref name="ssiivx">Apple Computer, ''Macintosh IIvx, Macintosh IIvi, Performa 600 Service Source'' ([[Macintosh IIvx Service Source]], [[:File:Macintosh_iivx.vi.perf_600.pdf]]), Specifications chapter and Additional Procedures → Battery Verification ("if the battery voltage is below 2.8 volts, replace the battery").</ref>;
			a "230 W" rating was previously given here and is the Macintosh IIfx's number.

			'''Check which mains variant you have before ordering primary-side parts.''' Apple prints the
			machine's A/C line input as '''100–120 VAC''' — the 100–240 VAC, 3 A figure often quoted for these
			machines is the rating of the '''switched monitor outlet''' on the back. A 220–240 V machine is a
			different supply, and a capacitor rated for rectified 120 V mains is not rated for rectified 240 V.
			'''Never fit a capacitor whose voltage rating is at or below the rail it sits on.'''

			'''The hazard, stated plainly.''' The primary reservoirs sit at the rectified mains potential and
			hold it after the unit is unplugged. Discharge them and '''verify with a meter''' before touching
			the board. Recapping a power supply is a normal repair; doing it with the reservoirs still charged
			is what kills people.

	== Tools Required ==		== Tools Required ==

Josh: Added Capacitor_Replacement_Guides category

2026-02-11T15:12:21Z

Added Capacitor_Replacement_Guides category

← Older revision		Revision as of 16:12, 11 February 2026
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	[[Category:Apple Vintage Computers]]		[[Category:Apple Vintage Computers]]
	[[Category:Apple Capacitor Guides]]		[[Category:Apple Capacitor Guides]]
			[[Category:Capacitor_Replacement_Guides]]

Josh: Created IIvi capacitor guide

2026-02-09T11:32:47Z

Created IIvi capacitor guide

New page

The '''Macintosh IIvi''' logic board contains surface-mount electrolytic capacitors that leak after 30+ years. This guide provides capacitor specifications and replacement procedures.

The IIvi, [[Macintosh IIvx]], and [[Performa 600]] share the same logic board design, so capacitor specifications are identical.<ref>{{cite web |url=https://recapamac.com.au/macintosh-iivi/ |title=Macintosh IIvi |publisher=Recap-a-Mac |access-date=2026-02-09}}</ref>

== Why Recap? ==

Electrolytic capacitors contain liquid or gel electrolyte that leaks over time. The leaked electrolyte is:
* '''Conductive''' — creates short circuits between traces
* '''Corrosive''' — destroys copper traces and attacks solder joints

Proactive recapping prevents irreversible damage.

== Logic Board Capacitors ==

The IIvi/IIvx/Performa 600 logic board contains SMD electrolytic and axial capacitors:<ref>{{cite web |url=https://recapamac.com.au/macintosh-iivi/ |title=Macintosh IIvi |publisher=Recap-a-Mac |access-date=2026-02-09}}</ref><ref>{{cite web |url=https://console5.com/store/macintosh-iivx-iivi-performa-600-smd-tantalum-and-axial-main-pcb-cap-kit.html |title=Macintosh IIvx / IIvi / Performa 600 Cap Kit |publisher=Console5 |access-date=2026-02-09}}</ref>

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:80%; text-align:center;"
|+ '''IIvi/IIvx/Performa 600 Logic Board Capacitors'''
|-
! Capacitance !! Voltage !! Qty !! Package !! Recommended Replacement
|-
| 47 µF || 16V || 6 || SMD electrolytic || KEMET T491D476K016AT (tantalum)
|-
| 220 µF || 16V || 2 || Axial electrolytic || Vishay MAL213825221E3
|}

[[File:Mac_IIvi_Recap_Guide.jpg|center|thumb|600px|Macintosh IIvi logic board capacitor locations. Source: Recap-a-Mac]]

=== Replacement Options ===

'''Tantalum (recommended for SMD):'''
* Solid electrolyte — cannot leak
* Available from Mouser, Digi-Key
* Note: stripe marks positive terminal (opposite of electrolytic)

'''Axial electrolytic:'''
* Use 105°C rated, low-ESR types
* Match original footprint
* Stripe marks negative terminal

== Power Supply Capacitors ==

The IIvi uses a 230W power supply shared with the IIci, IIcx, IIvx, Performa 600, Centris 650, and Quadra 700. Power supply capacitors vary by manufacturer (Sony, Astec, Delta).<ref>{{cite web |url=https://68kmla.org/forums/topic/59718-compact-desktop-power-supply-capacitor-lists-by-make-and-model/ |title=Compact Desktop Power Supply Capacitor Lists |publisher=68kMLA |access-date=2026-02-09}}</ref>

Consult the specific power supply label for capacitor values. Common values include high-voltage primary capacitors (200V–400V) and secondary filter capacitors.

'''Warning:''' Power supplies contain high-voltage capacitors. Discharge before servicing.

== Tools Required ==

* Soldering iron with fine tip (for SMD) and chisel tip (for axial)
* Hot air rework station (optional but helpful for SMD)
* Solder (60/40 or 63/37, 0.5-0.8mm)
* Flux (no-clean or rosin)
* Solder wick and desoldering pump
* Isopropyl alcohol (>90%) and brushes
* Multimeter
* Safety glasses

== Removal Procedure ==

=== SMD Capacitors ===
# Apply flux to capacitor terminals
# Heat one terminal while gently tilting the capacitor
# Alternate terminals until capacitor releases
# Or use hot air at 350-380°C

=== Axial Capacitors ===
# Heat one lead while applying gentle pressure
# Remove solder with wick or pump
# Repeat for second lead
# Remove capacitor

== Cleaning ==

After removal:
# Remove all electrolyte residue with isopropyl alcohol
# Inspect traces for corrosion
# Check continuity on damaged-looking traces
# Repair with conductive pen or jumper wire if needed

== Installation ==

=== Polarity ===
'''Critical:''' Capacitors are polarized. Installing backwards causes:
* Electrolytic: bulging, popping, or fire
* Tantalum: short circuit, fire

'''SMD electrolytic:''' stripe marks negative
'''Tantalum:''' stripe marks positive
'''Axial electrolytic:''' stripe marks negative

=== Soldering ===
# Tin one pad
# Position capacitor (verify polarity)
# Tack one terminal
# Solder second terminal
# Reflow first terminal
# Clean flux residue

== Testing ==

Before reassembly:
# Visual inspection — verify all polarities
# Continuity test — check for shorts
# Power-on test — verify startup chime and operation

== Purchasing Kits ==

Pre-made kits available from:
* Console5 (console5.com)
* Various eBay sellers

== References ==
<references />

== Related Pages ==
* [[Macintosh IIvi]]
* [[Macintosh IIvi General Maintenance]]
* [[Macintosh IIvi Troubleshooting]]
* [[Macintosh IIvx Capacitor Replacement Guide]]

[[Category:Apple Vintage Computers]]
[[Category:Apple Capacitor Guides]]