@mike2021 that console is almost 30 years old. You can pretty much be going on the assumption that all of your electrolytic capacitors will have to be replaced. You also need to check your traces for corrosion damaged, which is pretty normal given the age of this. Disassemble it, clean teh board, replace the caps, clean the board, check the traces, repair any damaged traces and clean some more. Post some good pictures of your boards so we can see what you see and hopefully we can help you to get it fixed.
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