68kMLA Classic Interface

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PM7500 PSU capacitors
Posted by: leitec on 2013-04-23 06:56:39
I noticed my 7500's PSU is making very high-pitched noises while running certain loads. It's worse when I put in a replacement 150MHz 604 CPU card, and then especially bad on System 7. I'm guessing this is a sign of capacitor failure on the PSU, which given its age is to be expected.

Does anyone by any chance already have a list of capacitors for this PSU?

Posted by: techknight on 2013-06-26 19:51:37
2 things. bad caps, or loose transformer core.

1