BleepingComputer.com: PSU Blues

Last week I was sitting beside my computer when it turned off. I simply thought it had gone into stand by mode and ingnored it.

After a min or so, I smelled melted plastic and before I could turn my comp off, the breaker in the room was tripped and all power was turned off.


After removing my 7 month old Power supply I was able to see a yellow plastic component had melted onto a coil (Inside the PSU). The PSU would not turn on anymore so obtained a RMA from my power supply's Manufacturer and today I recieved a brand new replacement.

Upon putting in my new PSU my computer seem to boot and run just fine. But after a few minutes of running it unexpectly turned off. And thats what happens every time you turn it on now.
I removed my new power supply and after looking at it, I noticed the same yellow plastic component had melted again.

I built my computer in early April of 2008, every peice was bought at the same time, and they where all brand new. Everything ran fine before last week.

Specs:

PSU: Corsair CMPSU-650TX 650W
MOBO: GIGABYTE GA-P35-DS3L LGA 775 Intel P35 ATX
CPU: Intel Core 2 Quad Q6600
RAM: G.SKILL 1GB 240-Pin DDR2 SDRAM DDR2 800 (x4)
Video Card: EVGA e-GeForce 8800 GTS
OS: XP Pro SP:3

I doubt I received another bad PSU.
So any advice about what the problem could be would be very helpful.

Thank you for you help,

Sam

This post has been edited by shudokansam: 24 October 2008 - 05:56 PM

If you have a loose connection this will cause a resistive load which in turn creates heat. I would check all of the connections and make sure there aren't any short from the motherboard to the chases ground.

Motherboard manufacturers Have been known to get a shipment of bad capacitors. So it wouldn't be the first time.