PSU Need help!!!

[jollygreen]

What could burn up your PSU?  My computers PSU burned up and took the mother board with it.  I got a new PSU (480w sata dual fan,  ATX power supply) and a new motherboard. I had some issues so I reinstalled Windows XP. everytihng worked fine for about 12 hours then BAM the new PSU went out but the new motherboard is fine.  I went out today and got a new PSU and a battery backup surge protector, got it all hooked up and everything was running fine for about 5 hours and then BAM the new PSU is now gone.  What could be causing this?

[Richenstony]

Are you sure you got the right voltage.... or its set to the level you need it set at ... did it smoke at all or give off a burning smell...

Tony

[jollygreen]

its set at 115v as were the previous ones.  I didnt smell any smoke either.

[Richenstony]

Weird... did you plug everything in yourself .... if you did is everything in its correct ports....

Tony




Tony

[jollygreen]

Hmm, I looked at it and everything seems to be plugged in where it needs to be.  When I put the new PSU in all the fans work and the system runs just fine for a few hours and then it pops the PSU.  I cant figure out what would do this, could the case cause it?

[Richenstony]

Is your psu well ventilated.... if it is i highley doubt its the case.... unless its being blocked buy something....

Tony

Im just doing a little research online .....

[jollygreen]

I suppose its got enough room, I dont have a stack of books on it.  I could try leaving one side of the case off.   

[Richenstony]

Yh i wouldn't do that.... 

It sounds like a short so ive heard ... check with an ohm meter... if you haven't got one i suggest you buy one....


Tony

[jollygreen]

I'll give it shot, thanks a ton for help.

[patio]

Cheap PSU's do this all the time...

[Fed]

How do you know PSU#2 and PSU#3 'popped'?
They may have just latched out due to a short or voltage fluctuation?