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Recap guide

Recap the Sega 32X

Switching-supply ripple can cause video noise on the 32X, and replacing two caps is a documented fix. We found no full recap guide.

Open the interactive checklist Tick off each capacitor as you replace it. It saves in your browser.

Check first. A recap is not always the answer here, so look at the guides before you order parts.

Where to start

Clues from write-ups and forum threads, not a diagnosis. Low confidence means one thread or one repair; high means several write-ups agree.

  • Video noise (Medium confidence). Kevtris explains the noise as switching supply ripple and shows a two-capacitor swap, one on the main PCB and one on the vertical PCB. Source
  • Lock-ups (Medium confidence). Sega bulletins cover 32X lock-ups on Model 1 revisions (VA4, VA5/6/6.5/6.8) through cap removal or changes. It is a clock fix, not a recap. Source

Tips, tales and maybes

Found in write-ups and forum threads. These are other people's reports, not tested by us. Check part references and values against your own board.

  • Story: Whining coil and video ripple (Low confidence). A Shmups thread on a whining 32X power coil and video ripple lists parts people changed (L7, IC13, timing cap C85, TR5 and a Console5 recap), with recapping and IC13 helping some, hot glue or foam damping the whine, and ripple often remaining. One user ruined a unit, and some bypassed the onboard supply with an external regulator. Source
  • Tip: Lock-ups that take an hour (Medium confidence). The ConsoleMods service-bulletin page says 32X jitter and lock-ups can take up to an hour to appear, and names parts in the fixes, such as C92 (33 pF disc ceramic near IC4) and C78 (1206 SMD, VA4 and VA5/6/6.8). It cautions not to throw away C112 after removal because it is reused, to avoid bridging pads removing C78, and to route clock wires away from the cartridge pins. Source

Before you start

  • Boards changed during production. Check your board number against the guides before you order parts.

Guides we used

This page and the interactive bench are built from these. They have the photos and the full detail, so please read them and support their authors.

  • Sega 32X Video Noise Fix by Kevtris (Write-up) by SmokeMonster (RetroRGB). Explains the noise source (switching supply ripple) and the two-capacitor swap
  • Genesis: 32X Service Bulletin Fixes (Write-up) by ConsoleMods Wiki, CC BY. Sega bulletins on 32X lock-ups with Model 1 revisions (VA4, VA5/6/6.5/6.8) via cap removal/changes; clock fix, not a recap
  • Console5 wiki: 32X (Wiki) by Console5. A community wiki page for this machine, often with board photos and capacitor lists.

The capacitor list

We have not checked a capacitor list for this machine yet, so none is shown. Follow the guide above for your board, then add the capacitors in the interactive checklist and it builds a shopping list for you.

Skip the sourcing

While you are in there

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Steps, tools and safety

The steps, the tools in top, middle and budget picks, and the safety list are the same for every machine, so they live on one page: How to recap, step by step.

Values are shown as published in the guides above, and boards changed during production. Check the board in front of you. A recap involves hot tools and, on some machines, dangerous voltages. You do it at your own risk.

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