Dry joints - an old friend returns to bite the unwary.

[Elitist]

A reminder that bad PSU s aren't always down to bad caps! Have a "Winpower" PFC VV-350 here that was showing all the signs, viz. intermittent operation (or not), sudden shutdown, etc, and, occasionally, no problem at all! Clean as a whistle inside - no bulging caps, no burnt tracks, thermal cutout not even fitted (!). Just a dry joint on an emitter diode - I think, ie unless the problem returns.....

[Rainbow]

Re: Dry joints - an old friend returns to bite the unwary.

Once I was doing something with one of my machines and then it wouldn't power on again - so I replaced the PSU. Then found dry joint on +5V output capacitor in the swapped one - Codegen (EuroCase) AT.