Power supply doesn't work on just one motherboard (stumped)

[kc8adu]

Re: Power supply doesn't work on just one motherboard (stumped)

shit replacements will not last.seen many tv psu that were recapped with ebay shit kits that didnt go 6 months.

Actually the pictures were taken BEFORE I started messing around with it The caps I put in are new. They may not be brand names, but they SHOULD work....I'm not exactly interested in this thing lasting a life time - I just want it to turn on enough to return it to the guy who brought it in

[Dannyx]

Re: Power supply doesn't work on just one motherboard (stumped)

it is possible you plugged it enough to wipe the contacts.
but i bet this will rear its ugly head again soon.shortly after you declare it "fixed" and return it.

Definitely not a contact issue, since the volts didn't drop to 0 entirely to signal a bad connection - they fluctuated and tried going up but dropped again, as if too much load was applied.

[momaka]

Re: Power supply doesn't work on just one motherboard (stumped)

Definitely not a contact issue, since the volts didn't drop to 0 entirely to signal a bad connection - they fluctuated and tried going up but dropped again, as if too much load was applied.

That could still be bad contacts. I've seen this happen quite a few times with experimental circuits where I got lazy and didn't use proper alligator clips to run power - the voltage on the meter would jump up and down as if my power source was failing (and it wasn't - it was just the poor connections causing the problem).

So perhaps tighten the pins on that "faulty" PSU, especially the 5VSB wire and ground around it.

The only other thing I can think of why the "faulty" PSU was acting up is if the motherboard was somehow making the 5VSB oscillate due to unstable loading. But I think the chances of that are very slim (probably close to impossible).