Ah, you posted just as I was about to. Looks like Andy has raised his prices a bit….
Appreciate the explanation. Still wonder about you trying to solve fan noise in a machine that wouldn’t run… unless your PSU has just died very recently. But, no matter.
For PSU rebuild / refurbs contact Andy Cuffe (
[email protected]) down in Austin Texas USA. He’s a very good guy and may even rebuild Quicksilver PSUs for slightly less than the MDDs. He did say back in November of 2017 …that he could offer members of this Forum a price reduction for his services.
And here’s an eBay link (provided by GaryN) for Andy’s services:
https://www.ebay.com/itm/REPAIR-SERVICE-Apple-PowerMac-G4-Mirror-Drive-Doors-Power-Supply-MDD/141030901102?hash=item20d618c56e:g:~RsAAMXQysxSAA61If you’re now stuck with (2) bad PSUs, Andy might offer you a little for one of the dead ones. Ask him. And be certain to tell him that you're a member of MacOS9Lives Forum.
All of this, if you can’t find a good source for this service… up there in Canada.
Only other simple thing I might suggest at this point is to check continuity through the PSU’s fuse. But if the machine did start & run, only to then die later (never to boot again) then it’s most likely RIP… PSU.
I’ve two QS “spares” at present. One completely dead and the other one with a dead fan power circuit… or I’d simply send you one. My regrets. Do contact Andy.
And no, it shouldn’t damage the PSU if the logic board is toast.