Pulled from an early 2000's PowerMac MDD G4. I've replaced the capacitors discussed in this thread:

[url]https://www.badcaps.net/forum/showthread.php?t=14077[/url]

The PSU still won't come up; on my bench, jumpering the PSU on causes the fans to spin briefly, and checking the optocoupler at M8 I see 5v, leading me to believe the PSU supervisor is shutting the supply down. I can't for the life of me seem to find anything wrong on the PSU, though.

Would anyone have any suggestions on common faults to check? Anything I might be overlooking? Does anyone...

Re: Suspect Bad PS Apple AcBel API 1PC36

I've got this same PSU. Initial symptoms were the same as described elsewhere in this thread. I replaced all the "shotgun" caps, and found three that were far out of spec. None were bulging particularly.

Since replaced, the PSU when jumpered on spins the fans briefly. I attempted to force the supply on by soldering a resistor to Pin2 of the M8 optocoupler, but this causes the fans to spin briefly and causes a rapid clicking noise from the supply.

Would anyone happen to have any diagnostic suggestions...

Re: New Members - please post your introductions here

Hi, I'm repairing a 360w AcBel PSU from a circa 2002 MDD PowerMac G4, looking for answers. Thanks for letting me in!