[johnwill]

"Destroy their PC"? That's a little extreme. I run four systems here 24/7, and even though I've had several fan failures, all the machines are alive and well. If you don't have any additional cooling and the P/S fan goes, it could take out the P/S, but that's a long ways from destroying the PC, it's just a replacement part. Most new PC's come with a monitor that will shutdown the system if the temperatures get too high, which will minimize the possibility of significant damage from overheating.

 

[johnwill]

I have a power supply sitting on my bench that fits your description! I'm working on a customer's PC and the next morning it was dead as a doornail, no action when I push the button! Took the supply out and fired it up on the bench, and I'm missing the +5VSB voltage, so the PC can't start the supply. If I short the switch leads, it all comes on, except for that voltage...

 

[johnwill]

I have zero faith that you have adequately tested the P/S, I think you really should do a proper test of that before you panic.

 

[johnwill]

Well, I would want to see the P/S actually power up a system before I declared it working. I have a P/S sitting my bench right now, and if I plug it in and short the two power contacts, it appears to work. +5 and +12 come out right in spec. Upon closer examination, I see that +5VSB is not functional, which will prevent the P/S from actually powering a system.