Jump to content

Nintendo Wii Capacitor Replacement Guide

From RetroTechCollection
Nintendo Wii rear panel
Rear of an RVL-001. The video filter capacitors sit on the mainboard just inside the AV Multi Out connector (second socket from the bottom); the DC input is below it. Photo: Evan-Amos, public domain.

Capacitor replacement on the Nintendo Wii mainboard, model RVL-001. Nintendo published no schematic or parts list for the Wii, so there is no official capacitor list. What is known comes from teardown photographs and from repairs reported on the BitBuilt forum. Read the markings on your own board before ordering parts, and record them.

The Wii mainboard is mostly ceramic chip capacitors. The aluminium electrolytics are surface-mount cans in two areas: the DC-DC converter section beside the heat sink, and the analogue video output filter by the AV Multi Out connector.[1][2] The best-documented failure is in the video filter.

Symptoms

[edit | edit source]
  • A very dark picture at switch-on that lightens slowly over the following minutes. Replacing the surface-mount electrolytics cured it on a board reported on BitBuilt in 2022.[2] A second owner reported the same dark picture on a six-layer C/RVL-CPU-01.[3]
  • A component picture that is scrambled until the console warms up while composite stays clean. BitBuilt members suspected an electrolytic on the Y line, then the AV encoder; the owner's swap of two video capacitors did not change it.[4]
  • No sound after work near the AV connector, from the audio amplifier's 12 V filter capacitor C90.[3]

See also Capacitor Failure Symptoms.

Known capacitors

[edit | edit source]
RVL-001 mainboard electrolytics reported by repairers
Position Area Value fitted in the reported repair Voltage rating Notes
Closest to the AV Multi Out connector (C90 in one report) Beside the AV Multi Out connector 220 µF 16 V minimum On the 12 V line. One repair names the 12 V filter for the audio amplifier C90, wired with diode D4[2][3]
Four further capacitors Near the AV Multi Out connector, with the one above 220 µF 6.3 V or 16 V suitable per BitBuilt; 10 V fitted The round electrolytics in series with the video lines, composite and Y among them, are in this area[2][4][5]
One capacitor On its own by the USB ports Not reported 10 V Only relevant to USB faults[2]
Several cans DC-DC converter section, beside the power inductors between the heat sink and the DC input Not published Not published Visible in iFixit's photographs of a C/RVL-CPU-01[1]

Only C90 has a published designator, and the values come from one repair thread, not from Nintendo. 220 µF is the value the poster ordered and the forum confirmed for these positions; the voltage ratings are the forum's advice, not a reading of the original cans. WiiBrew records simpler power circuitry from the RVL-CPU-20 onwards, so expect the converter section of later boards to differ from the RVL-CPU-01 in iFixit's photographs.[6]

Recording your own board

[edit | edit source]
  1. Note the board revision from the silkscreen (for example C/RVL-CPU-01).[1]
  2. Photograph each can before removing it. Write down the designator printed beside it, the capacitance and voltage printed on the can, its diameter and height, and which pad the dark band on the can's top sits over.
  3. Measure each removed capacitor's capacitance and ESR, and check the pads for electrolyte residue.

Replacement procedure

[edit | edit source]
  1. Open the console and lift out the disc drive: see the maintenance guide.
  2. Reach the mainboard as in iFixit's heat sink guide: fan and shroud, Wi-Fi antennas, EMI fingers, brackets, then the nine 7 mm screws of the mainboard cover. Keep the thermal pads intact and put the wireless chip's pad back on reassembly.[7]
  3. Record every capacitor you are going to change (above).
  4. Remove each can with hot air and plenty of flux. The pads lift easily; a soldering iron alone will do with care.[2]
  5. Fit replacements of the same capacitance, a voltage rating at least as high, and the same footprint. A 6.3 mm diameter can fits; an 8 mm one is too wide for the pads.[2]
  6. Check polarity on every part before soldering. On a surface-mount aluminium can the dark band marks the negative terminal; on a tantalum chip the stripe marks the positive. Mixing the two conventions put a whole set in backwards in one repair.[3]
  7. Reassemble, then test as below.

After the recap

[edit | edit source]
Checks after replacement
Check Expected
Power LED on switch-on Green[8]
Drive power connector 3.3 V on pins 3 and 4, 5 V on pins 7 and 8, 12 V on pins 11 and 12, against ground on pins 1, 2, 5, 6, 9 and 10[9]
Picture Full brightness from the first screen, on composite and on component if you have the cable
Sound Both channels; no sound points at C90 and D4[3]
Capacitor C90 Not a low resistance across it with the board unpowered; the failed part in the BitBuilt repair read 18 Ω[3]

Safety

[edit | edit source]

The console runs from the 12 V RVL-002 adapter, so the mainboard carries no mains voltage.[10] The adapter itself is a mains device, and capacitors on its mains side can hold a dangerous charge after it is unplugged. The drive's semiconductor laser is a Class I product of 0.9 mW maximum.[10][8]

[edit | edit source]

References

[edit | edit source]
  1. ↑ 1.0 1.1 1.2 Sterling Hirsh, "Nintendo Wii Teardown", iFixit. Community teardown of an RVL-001 with a C/RVL-CPU-01 board. The board photographs in steps 19-21 show surface-mount aluminium electrolytic cans beside the power inductors of the DC-DC converter section, between the heat sink and the DC input.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 BitBuilt forum, "Trying to find good replacements for Wii SMD electrolytic capacitors", December 2022 to November 2024. Community thread. Symptom: very dark picture that lightens over time. Advice from forum member Stitches: of the five capacitors, a 220 µF 6.3 V or 16 V part suits four, but the one closest to the AV out is on the 12 V line and must be 16 V; a 10 V capacitor on its own by the USB ports only matters for USB faults; use hot air and plenty of flux to avoid lifting pads. The original poster's follow-up (November 2024): repair successful; 220 µF 6.3 V parts measuring 8 × 6.2 mm were too wide for the pads, 220 µF 10 V parts of 6.3 × 7.7 mm fitted.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 BitBuilt forum, "Wii audio repair", July 2022. Community repair report on a six-layer C/RVL-CPU-01: dark screen at power-up; every electrolytic on that side of the board replaced with tantalums, fitted backwards because the marking conventions differ; after correcting them the picture was good but there was no sound; diode D4, C90 (the 12 V filter) and the audio amplifier traced as one circuit; C90 measured 18 Ω and was replaced, restoring the sound.
  4. ↑ 4.0 4.1 BitBuilt forum, "Component video scrambled - Composite works fine - issue?", October 2018 to January 2019. Community thread: video path GPU, AV encoder, passives, port; electrolytics on the video lines and then the AV encoder suspected; swapping the composite and Y capacitors did not change the fault.
  5. ↑ BitBuilt forum, "HELP! How would I fix this", March 2025. Community thread: the analogue video filter by the AV port; a damaged board bypassed by wiring each round electrolytic capacitor to the pad closest to the port; the capacitors clean the signal and the inline diodes protect the AV encoder from static.
  6. ↑ WiiBrew, "RVL-CPU-20". Community wiki: simpler power circuitry than the RVL-CPU-01.
  7. ↑ Andrew Bookholt, "Nintendo Wii Heat Sink Replacement", iFixit. Community guide for the RVL-001: drive removal, fan and shroud, antennas, EMI fingers and brackets, nine 7 mm mainboard cover screws, thermal pad for the wireless chip on the cover of some models, fragile thermal pads.
  8. ↑ 8.0 8.1 Nintendo of America, Wii Operations Manual: System Setup (61914J), 2009, p. 3 (Class I laser product) and p. 5: Power LED green with the console on, orange in standby with WiiConnect24 on, red in standby with it off. Hosted as File:Nintendo Wii Operations Manual System Setup (USA, 61914J).pdf.
  9. ↑ WiiBrew, "Hardware/Disc Drive". Community wiki: 12-pin drive power connector pinout.
  10. ↑ 10.0 10.1 Nintendo Co., Ltd., Wii取扱説明書 準備編 (Wii Operations Manual, setup volume), form MAA-RVL-S-JPN-C2, p. 68: console input DC 12 V 3.7 A; RVL-002(JPN) input AC 100 V, output 12 V 3.7 A. Hosted as File:Nintendo Wii Operations Manual Setup (Japan, MAA-RVL-S-JPN-C2).pdf.
Retrieved from "https://retrotechwiki.com/index.php?title=Nintendo_Wii_Capacitor_Replacement_Guide&oldid=27366"