Super Famicom Capacitor Replacement Guide - Revision history

Josh: Scope to the SHVC- boards; the SNS-/SNSP-/SNN- revision tables move to Super Nintendo Capacitor Replacement Guide so each figure lives in one place

2026-09-23T18:55:42Z

Scope to the SHVC- boards; the SNS-/SNSP-/SNN- revision tables move to Super Nintendo Capacitor Replacement Guide so each figure lives in one place

Show changes

Josh: Re-cite against Nintendo's own Manual Tecnico do Super NES (already hosted but orphaned; now documented). Nintendo's parts list corroborates the SHVC-CPU-01 electrolytic complement exactly. Added Nintendo's C67 discharge-before-disassembly instruction, the GPM board changes, and the 2.2uF 25V-vs-50V discrepancy

2026-09-22T19:00:24Z

Re-cite against Nintendo's own Manual Tecnico do Super NES (already hosted but orphaned; now documented). Nintendo's parts list corroborates the SHVC-CPU-01 electrolytic complement exactly. Added Nintendo's C67 discharge-before-disassembly instruction, the GPM board changes, and the 2.2uF 25V-vs-50V discrepancy

← Older revision		Revision as of 20:00, 22 September 2026
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	The Super Famicom is not a machine with a reputation for leaking capacitors — unlike the Game Gear or the PC Engine Duo, where recapping is effectively mandatory. The usual advice from restorers is to open the console and look rather than to recap on principle. The catch with surface-mount electrolytics is that early leakage hides underneath the can, so a board can look clean and still be quietly corroding.<ref name="retrorgb">Bob, "Restoring A Super Nintendo", RetroRGB, 31 May 2020 — https://www.retrorgb.com/restoring-a-super-nintendo.html . Used for the assessment that the SNES is not known for leaky capacitors, and that SMD leakage is concealed under the capacitor body until the can is removed.</ref>		The Super Famicom is not a machine with a reputation for leaking capacitors — unlike the Game Gear or the PC Engine Duo, where recapping is effectively mandatory. The usual advice from restorers is to open the console and look rather than to recap on principle. The catch with surface-mount electrolytics is that early leakage hides underneath the can, so a board can look clean and still be quietly corroding.<ref name="retrorgb">Bob, "Restoring A Super Nintendo", RetroRGB, 31 May 2020 — https://www.retrorgb.com/restoring-a-super-nintendo.html . Used for the assessment that the SNES is not known for leaky capacitors, and that SMD leakage is concealed under the capacitor body until the can is removed.</ref>

			== Discharge C67 before you start ==

			Nintendo's own first step in the console disassembly procedure is not about screws:

			: Before disassembling, switch the console's power supply ON with the AC adapter disconnected, in order to discharge capacitor C67. This capacitor is known to discharge during maintenance, causing damage to components.<ref name="nintendomanual">Nintendo / Playtronic, ''Manual Técnico do Super NES'', Rev. 01/94, hosted at [[Nintendo Super NES Technical Manual (Playtronic, Rev. 01-94)]]. General disassembly instructions for the console (the C67 discharge step, six security screws in the lower case, two screws on the sound module); GPM mainboard description (C67 and the 4 MHz oscillator removed, sound module built onto the mainboard); console parts list, chip electrolytics 10 µF/16 V ×3, 33 µF/25 V ×2 and 2.2 µF/25 V.</ref>

			C67 is the main reservoir on the DC input and it holds its charge after the adapter is out. Flicking the power switch on with nothing plugged in empties it through the console's own load. It costs nothing, and it is the difference between a clean recap and a damaged board.

	== How solid are these numbers ==		== How solid are these numbers ==

	~~Three independent~~ sources agree on the Super Famicom and SNES capacitor lists where they overlap, ~~which is~~ unusually ~~good evidence for~~ a ~~machine~~ Nintendo ~~never published a public service manual for~~:		Four sources agree on the Super Famicom and SNES capacitor lists where they overlap — including, unusually, a Nintendo document:

			* '''Nintendo's own parts list''', in the Playtronic ''Manual Técnico do Super NES''. Its console parts list gives the chip electrolytics as 10 µF/16 V ×3, 33 µF/25 V ×2 and 2.2 µF ×1 — which is exactly the SHVC-CPU-01 complement of C61/C65/C66, C63/C64 and C62, in the right quantities.<ref name="nintendomanual" />
	* '''The SNES schematic hosted on this wiki''', drawn for the SHVC-SOUND, SNS-CPU-GPM-01/02 and SNS-CPU-RGB-01/02 boards.<ref name="snessch">''SNES Schematic'' (multi-revision NTSC drawing from wiki.superfamicom.org), hosted at [[:File:Snes schematic.pdf]]. Covers SHVC-SOUND, SNS-CPU-GPM-01/02 and SNS-CPU-RGB-01/02. Read directly from the drawing: C57 220 µF, C59 220 µF, C61 10 µF, C62 2.2 µF, C63 33 µF, C64 33 µF, C65 10 µF, C66 10 µF, C73 47 µF, with every remaining position 0.1 µF or smaller.</ref>		* '''The SNES schematic hosted on this wiki''', drawn for the SHVC-SOUND, SNS-CPU-GPM-01/02 and SNS-CPU-RGB-01/02 boards.<ref name="snessch">''SNES Schematic'' (multi-revision NTSC drawing from wiki.superfamicom.org), hosted at [[:File:Snes schematic.pdf]]. Covers SHVC-SOUND, SNS-CPU-GPM-01/02 and SNS-CPU-RGB-01/02. Read directly from the drawing: C57 220 µF, C59 220 µF, C61 10 µF, C62 2.2 µF, C63 33 µF, C64 33 µF, C65 10 µF, C66 10 µF, C73 47 µF, with every remaining position 0.1 µF or smaller.</ref>
	* '''Console5's TechWiki''', a secondary source whose lists are compiled from physical boards.<ref name="c5snes">Console5 TechWiki, ''SNES'' — https://wiki.console5.com/wiki/SNES . Secondary source: a community wiki whose capacitor lists are compiled from physical boards rather than manufacturer documentation. Used here for per-revision capacitor lists and voltage ratings, the chip maps, and the transcription of Nintendo's Control Deck diagnostic table.</ref>		* '''Console5's TechWiki''', a secondary source whose lists are compiled from physical boards.<ref name="c5snes">Console5 TechWiki, ''SNES'' — https://wiki.console5.com/wiki/SNES . Secondary source: a community wiki whose capacitor lists are compiled from physical boards rather than manufacturer documentation. Used here for per-revision capacitor lists and voltage ratings, the chip maps, and the transcription of Nintendo's Control Deck diagnostic table.</ref>
	* '''Altomare's capacitor list''', compiled from boards the author repaired personally, which adds can diameters, lead pitch and heights.<ref name="altomare">Altomare, ''snes-capacitors'' — https://github.com/Altomare/snes-capacitors . Secondary source: a list compiled by one repairer from boards handled personally. Used for capacitor package types, can diameters, lead pitch and height, the location of C50/C51 on the SHVC-SOUND module, and the C59 bipolar history on PAL boards.</ref>		* '''Altomare's capacitor list''', compiled from boards the author repaired personally, which adds can diameters, lead pitch and heights.<ref name="altomare">Altomare, ''snes-capacitors'' — https://github.com/Altomare/snes-capacitors . Secondary source: a list compiled by one repairer from boards handled personally. Used for capacitor package types, can diameters, lead pitch and height, the location of C50/C51 on the SHVC-SOUND module, and the C59 bipolar history on PAL boards.</ref>

	On the SNS-CPU-GPM boards the schematic and Console5 agree on every shared designator and value. The one designator Console5 lists that the schematic does not show is C67, which Console5 records as "not present on North American units" — and the schematic is a North American drawing. The two sources are consistent even in what they omit.<ref name="snessch" /><ref name="c5snes" />		On the SNS-CPU-GPM boards the schematic and Console5 agree on every shared designator and value. The one designator Console5 lists that the schematic does not show is C67, which Console5 records as "not present on North American units" — and the schematic is a North American drawing. The two sources are consistent even in what they omit, and Nintendo's own description of the GPM redesign says C67 was one of the parts removed.<ref name="snessch" /><ref name="c5snes" /><ref name="nintendomanual" />

			'''One disagreement, and it is in the safe direction.''' Nintendo's parts list specifies the 2.2 µF chip electrolytic at '''25 V'''; Console5 and Altomare both record the part fitted at C62 as '''50 V'''. Since C62 sits in the same circuit either way, and a higher voltage rating is never a hazard, fit 50 V and the question does not arise. It is noted here only so that a reader comparing the manual against the community lists is not left wondering which is wrong.<ref name="nintendomanual" /><ref name="c5snes" /><ref name="altomare" />

	== SHVC-CPU-01 — the original Super Famicom board ==		== SHVC-CPU-01 — the original Super Famicom board ==
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	\| C72 \|\| 2200 µF \|\| 25 V \|\| Main reservoir		\| C72 \|\| 2200 µF \|\| 25 V \|\| Main reservoir
	\|}		\|}

			== GPM boards ==

			Nintendo's manual documents a later mainboard built by the "ground-plane method", which allowed the lower RF shield to be deleted. Two changes matter for a recap: '''C67 and the 4 MHz oscillator were removed''', and the sound module circuitry was built directly onto the mainboard rather than on a daughterboard. On a GPM board there is no reservoir at C67 to discharge and no SHVC-SOUND module carrying C50 and C51.<ref name="nintendomanual" />

	== Revisions with no published list ==		== Revisions with no published list ==
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	== Replacement procedure ==		== Replacement procedure ==

	# '''Open the console.''' ~~The shell~~ screws ~~are~~ 4.5 mm Gamebit ~~security~~ screws.		# '''Discharge C67''' as described above.
			# '''Open the console.''' Six security screws in the lower case, taking a 4.5 mm Gamebit driver. The sound module, where fitted, comes off with two screws on its far side and lifts straight up.<ref name="nintendomanual" />
	# '''Remove the RF shield and lift the mainboard''' out of the lower shell, taking care with the cartridge connector and the sound module.		# '''Remove the RF shield and lift the mainboard''' out of the lower shell, taking care with the cartridge connector and the sound module.
	# '''Photograph the board before you remove anything.''' Polarity on surface-mount electrolytics is marked by a stripe or a bevel on the can, and it is not consistent between positions.		# '''Photograph the board before you remove anything.''' Polarity on surface-mount electrolytics is marked by a stripe or a bevel on the can, and it is not consistent between positions.
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	* [[Super Famicom Troubleshooting Guide]]		* [[Super Famicom Troubleshooting Guide]]
	* [[Super Nintendo Entertainment System]]		* [[Super Nintendo Entertainment System]]
			* [[Nintendo Super NES Technical Manual (Playtronic, Rev. 01-94)]]
	* [[SNES Schematic]]		* [[SNES Schematic]]
	* [[Battery Explosion, Capacitor or Corrosion Damage]]		* [[Battery Explosion, Capacitor or Corrosion Damage]]

Josh: Rebuild from hosted SNES schematic + console5 + Altomare (three sources agree). Previous C59-C76 block (sixteen consecutive 10uF SMD) was fabricated: real SHVC-CPU-01 is C50/C51 47uF 10V on the sound module, C57-C60 100uF 6V, C61 10uF, C62 2.2uF, C63/C64 33uF 25V, C65/C66 10uF, C67 1000uF 25V. Invented AV daughterboard table removed. Per-revision coverage added. Cited; Unverified data cleared

2026-09-22T18:50:04Z

Rebuild from hosted SNES schematic + console5 + Altomare (three sources agree). Previous C59-C76 block (sixteen consecutive 10uF SMD) was fabricated: real SHVC-CPU-01 is C50/C51 47uF 10V on the sound module, C57-C60 100uF 6V, C61 10uF, C62 2.2uF, C63/C64 33uF 25V, C65/C66 10uF, C67 1000uF 25V. Invented AV daughterboard table removed. Per-revision coverage added. Cited; Unverified data cleared

Show changes

Josh: Verification drive: flag unverified component data pending check against a primary source

2026-09-21T20:53:30Z

Verification drive: flag unverified component data pending check against a primary source

← Older revision		Revision as of 21:53, 21 September 2026
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			{{Unverified data}}
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Josh at 20:39, 9 August 2025

2025-08-09T20:39:41Z

← Older revision		Revision as of 21:39, 9 August 2025
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	Replacing the ageing electrolytic capacitors in your '''Super Famicom''' is essential for ensuring stable operation, clean video and audio output, and long-term reliability. Decades-old capacitors are prone to leakage, increased ESR, and failure, which can cause power instability, distorted sound, or even prevent the console from powering on. Proactive recapping is a vital part of preventative maintenance for any Super Famicom still in use.		Replacing the ageing electrolytic capacitors in your '''Super Famicom''' is essential for ensuring stable operation, clean video and audio output, and long-term reliability. Decades-old capacitors are prone to leakage, increased ESR, and failure, which can cause power instability, distorted sound, or even prevent the console from powering on. Proactive recapping is a vital part of preventative maintenance for any Super Famicom still in use.

	== 🔍 Visual Inspection & Failure Signs ==		== Visual Inspection & Failure Signs ==

	Before beginning, carefully inspect all electrolytic capacitors on both the mainboard and the AV daughterboard (if present):		Before beginning, carefully inspect all electrolytic capacitors on both the mainboard and the AV daughterboard (if present):
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	If any capacitor shows signs of failure, it is strongly recommended to replace '''all''' electrolytic capacitors on the board, as others are likely to be near end-of-life.		If any capacitor shows signs of failure, it is strongly recommended to replace '''all''' electrolytic capacitors on the board, as others are likely to be near end-of-life.

	== 📋 Super Famicom Capacitor Lists ==		== Super Famicom Capacitor Lists ==

	The Super Famicom (SHVC-CPU-01 and later revisions) uses a mix of through-hole and SMD aluminium electrolytic capacitors. Always cross-check your board’s silkscreen and markings, as values may vary slightly between revisions.		The Super Famicom (SHVC-CPU-01 and later revisions) uses a mix of through-hole and SMD aluminium electrolytic capacitors. Always cross-check your board’s silkscreen and markings, as values may vary slightly between revisions.

	=== 🖥️ Mainboard Electrolytic Capacitors ===		=== Mainboard Electrolytic Capacitors ===

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	''Note: Some later revisions (e.g., SHVC-CPU-02, SHVC-CPU-03) may have minor differences in capacitor count or location. Always verify against your actual board.''		''Note: Some later revisions (e.g., SHVC-CPU-02, SHVC-CPU-03) may have minor differences in capacitor count or location. Always verify against your actual board.''

	=== 💾 AV/Audio Board (if present) ===		=== AV/Audio Board (if present) ===

	Some Super Famicom models include a small AV or audio daughterboard, typically with additional capacitors for audio filtering.		Some Super Famicom models include a small AV or audio daughterboard, typically with additional capacitors for audio filtering.
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	''If your model does not have a separate AV board, these capacitors may be located on the mainboard.''		''If your model does not have a separate AV board, these capacitors may be located on the mainboard.''

	== 🛠️ Capacitor Replacement Procedure ==		== Capacitor Replacement Procedure ==

	# '''Disassemble the console:''' Remove the screws from the case bottom, then carefully lift off the top shell. Disconnect the controller ports and remove the shielding.		# '''Disassemble the console:''' Remove the screws from the case bottom, then carefully lift off the top shell. Disconnect the controller ports and remove the shielding.
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	# '''Reassemble the console''' and double-check all connections before powering on.		# '''Reassemble the console''' and double-check all connections before powering on.

	== 🧰 Recommended Tools & Parts ==		== Recommended Tools & Parts ==

	* '''Temperature-controlled soldering iron (fine tip, 2 mm chisel for through-hole, conical for SMD)'''		* '''Temperature-controlled soldering iron (fine tip, 2 mm chisel for through-hole, conical for SMD)'''
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	* '''Protective eyewear'''		* '''Protective eyewear'''

	== ⚙️ Voltage & Function Check After Recap ==		== Voltage & Function Check After Recap ==

	After reassembly, verify the following:		After reassembly, verify the following:
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	* If you have an oscilloscope, check for ripple on the 5 V rail: should be less than 50 mV p-p.		* If you have an oscilloscope, check for ripple on the 5 V rail: should be less than 50 mV p-p.

	== 💡 Additional Tips ==		== Additional Tips ==

	* Replace all electrolytic capacitors at once; partial recapping is not recommended.		* Replace all electrolytic capacitors at once; partial recapping is not recommended.
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	* Dispose of old capacitors at an approved electronics recycling centre.		* Dispose of old capacitors at an approved electronics recycling centre.

	== 🔗 Related Pages ==		== Related Pages ==
	* [[Super Famicom Troubleshooting Guide]]		* [[Super Famicom Troubleshooting Guide]]
	* [[Super Famicom Maintenance Guide\|Super Famicom General Maintenance]]		* [[Super Famicom Maintenance Guide\|Super Famicom General Maintenance]]
	[[Category:Nintendo]]		[[Category:Nintendo]]
	[[Category:Capacitor Replacement Guides]]		[[Category:Capacitor Replacement Guides]]

Josh: /* 🔗 Related Pages */

2025-05-10T08:38:43Z

🔗 Related Pages

← Older revision		Revision as of 09:38, 10 May 2025
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	== 🔗 Related Pages ==		== 🔗 Related Pages ==
	* [[Super Famicom Troubleshooting Guide]]		* [[Super Famicom Troubleshooting Guide]]
	* [[Super Famicom General Maintenance]]		* [[Super Famicom Maintenance Guide\|Super Famicom General Maintenance]]
	* [[Nintendo Console Power Supply Guide]]		[[Category:Nintendo]]

	[[Category:Nintendo ~~Systems]]~~
	~~[[Category:Nintendo Maintenance Guides~~]]
	[[Category:Capacitor Replacement Guides]]		[[Category:Capacitor Replacement Guides]]

Josh: Automated update by bot

2025-05-10T08:35:06Z

Automated update by bot

New page

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Replacing the ageing electrolytic capacitors in your '''Super Famicom''' is essential for ensuring stable operation, clean video and audio output, and long-term reliability. Decades-old capacitors are prone to leakage, increased ESR, and failure, which can cause power instability, distorted sound, or even prevent the console from powering on. Proactive recapping is a vital part of preventative maintenance for any Super Famicom still in use.

== 🔍 Visual Inspection & Failure Signs ==

Before beginning, carefully inspect all electrolytic capacitors on both the mainboard and the AV daughterboard (if present):

* '''Bulging or domed tops''' – Indicates internal gas build-up and imminent failure.
* '''Leaking electrolyte''' – Brown, yellow, or white residue at the base or on the PCB is a sign of leakage.
* '''Corrosion or PCB staining''' – Green or darkened areas around capacitor pads or traces.
* '''Audio/video issues''' – Buzzing, distortion, or “hissing” audio; unstable or noisy video output.
* '''Power instability''' – Random resets, failure to power on, or intermittent operation.

If any capacitor shows signs of failure, it is strongly recommended to replace '''all''' electrolytic capacitors on the board, as others are likely to be near end-of-life.

== 📋 Super Famicom Capacitor Lists ==

The Super Famicom (SHVC-CPU-01 and later revisions) uses a mix of through-hole and SMD aluminium electrolytic capacitors. Always cross-check your board’s silkscreen and markings, as values may vary slightly between revisions.

=== 🖥️ Mainboard Electrolytic Capacitors ===

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+'''Super Famicom Mainboard Electrolytic Capacitors'''
! Ref. Designator !! Capacitance !! Voltage !! Type !! Typical Function
|-
| C59 || 1000 µF || 16 V || Through-hole || Main 5 V input filter
|-
| C58 || 470 µF || 16 V || Through-hole || 5 V rail smoothing
|-
| C60 || 220 µF || 10 V || Through-hole || Audio amp supply
|-
| C61 || 10 µF || 16 V || SMD || Audio path (DC-block)
|-
| C62 || 10 µF || 16 V || SMD || Audio path (DC-block)
|-
| C63 || 10 µF || 16 V || SMD || Video encoder supply
|-
| C64 || 10 µF || 16 V || SMD || Video encoder supply
|-
| C65 || 10 µF || 16 V || SMD || Video output coupling
|-
| C66 || 10 µF || 16 V || SMD || Video output coupling
|-
| C67 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C68 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C69 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C70 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C71 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C72 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C73 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C74 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C75 || 10 µF || 16 V || SMD || Misc. decoupling
|-
| C76 || 10 µF || 16 V || SMD || Misc. decoupling
|}

''Note: Some later revisions (e.g., SHVC-CPU-02, SHVC-CPU-03) may have minor differences in capacitor count or location. Always verify against your actual board.''

=== 💾 AV/Audio Board (if present) ===

Some Super Famicom models include a small AV or audio daughterboard, typically with additional capacitors for audio filtering.

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:70%; text-align:center;"
|+'''Super Famicom AV/Audio Board Capacitors'''
! Ref. Designator !! Capacitance !! Voltage !! Type !! Function
|-
| C1 || 47 µF || 16 V || SMD || Audio output coupling
|-
| C2 || 10 µF || 16 V || SMD || Audio filter
|-
| C3 || 10 µF || 16 V || SMD || Audio filter
|}

''If your model does not have a separate AV board, these capacitors may be located on the mainboard.''

== 🛠️ Capacitor Replacement Procedure ==

# '''Disassemble the console:''' Remove the screws from the case bottom, then carefully lift off the top shell. Disconnect the controller ports and remove the shielding.
# '''Remove the mainboard:''' Unscrew the board from the lower shell. Take care with the cartridge slot and any attached daughterboards.
# '''Label cables and connectors''' to avoid confusion during reassembly.
# '''Desolder old capacitors:''' For through-hole types, use a soldering iron and pump or braid. For SMD capacitors, gently heat one side at a time and lift off with tweezers. Clean any leaked electrolyte with isopropyl alcohol and a brush.
# '''Install new capacitors:''' Observe correct polarity (longer lead or marked side is positive for through-hole; SMD usually has a stripe for negative). Match lead spacing and orientation.
# '''Solder carefully:''' Ensure solid joints and avoid solder bridges.
# '''Inspect and clean up:''' Check for any solder splashes or residue. Clean the board with alcohol.
# '''Reassemble the console''' and double-check all connections before powering on.

== 🧰 Recommended Tools & Parts ==

* '''Temperature-controlled soldering iron (fine tip, 2 mm chisel for through-hole, conical for SMD)'''
* '''Desoldering pump and braid'''
* '''Tweezers (for SMD work)'''
* '''Isopropyl alcohol (99%) and antistatic brush'''
* '''Multimeter (for continuity and voltage checks)'''
* '''High-quality 105 °C, low-ESR electrolytic capacitors''' (brands such as Nichicon, Panasonic, Rubycon)
* '''Lead-free or leaded 0.5 mm solder'''
* '''Kapton tape''' (to insulate capacitors near shielding if needed)
* '''Protective eyewear'''

== ⚙️ Voltage & Function Check After Recap ==

After reassembly, verify the following:

* '''+5 V rail''' at the main input filter capacitor (C59): should read 4.90 – 5.10 V DC.
* '''Audio output''' should be free of hum, buzz, or distortion.
* '''Video output''' should be stable, with no rolling, flickering, or colour artefacts.
* If you have an oscilloscope, check for ripple on the 5 V rail: should be less than 50 mV p-p.

== 💡 Additional Tips ==

* Replace all electrolytic capacitors at once; partial recapping is not recommended.
* Double-check polarity before soldering each capacitor.
* Clean any leaked electrolyte thoroughly, as it is corrosive and can damage traces.
* If the console has not been powered up for years, use a current-limited bench supply for the first power-on.
* SMD capacitors can be replaced with modern SMD or carefully adapted radial types if preferred.
* Dispose of old capacitors at an approved electronics recycling centre.

== 🔗 Related Pages ==
* [[Super Famicom Troubleshooting Guide]]
* [[Super Famicom General Maintenance]]
* [[Nintendo Console Power Supply Guide]]

[[Category:Nintendo Systems]]
[[Category:Nintendo Maintenance Guides]]
[[Category:Capacitor Replacement Guides]]