PSU dead?

[rickyz]

I have been researching around regarding the issue I am having with my computer and I think it is the PSU but wanted the [H] community expertise.

When I push the power on button on the computer, it loads up for the first 3-5 minutes or so but then automatically shuts down. Now when I turn the computer on, nothing shows up on the monitor and the CPU fan just makes a revving noise. Also, my Saitek II illuminated keyboard lights up randomly even while the computer is off.

Anyone know for sure what the issue is? A friend said it could possibly be a botched motherboard with damaged caps but the caps are all intact. Any help is appreciated.

Thanks in advance.

 

[Southpawz]

Try another power supply

 

[rickyz]

thx

 

[rickyz]

The PCs that died were Shuttles... so I'm not too sure if I could use a full-sized PSU to test it. I have a Corsair VX550W on hand and I'm not sure if I can use the PCI-E connectors to power the SB81P. The wire colors are slightly different; 8-pin on the factory PSU has green/blank on 7/8 while the Corsair has black/black on 7/8. I don't think that's compatible but I'm not too sure.

Please help!