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 Electronics
 Electronics Repair
 Any help fixing my PSU
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idunno
Apprentece

8 Posts

Posted - Jun 28 2008 :  9:41:50 PM  Show Profile  Reply with Quote
EG-495P-SFMA24P 480W is the power supply that was in my computer and had to replace.

The computer would run for about 1 min and shut off. So I took the PSU out and tested shorting the green atx connector to ground.

I had a fan connected to one of the molex connectors. It would run for a max of 1.5 min and shut off.

If I took a momentary contact switch and placed it across pin 14/15, the power supply would come on and go right off. If I kept pressing the switch repeatedly, the PSU would keep running and power the fan, but would shut off after I quit pressing the switch.

I already have a replacement for that PSU, but I would like to be able to fix it.

Does anyone have any ideas on what part of the PSU is dead/dying?

(Edit...Move to Electronics Repair)

chandan.ahluwalia
Apprentice

India
126 Posts

Posted - Aug 17 2008 :  3:13:00 PM  Show Profile  Reply with Quote
I guess it is the capacitor problem but just i guess. I don't know the exact reason.
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cyclopsitis
Nobel Prize Winner

Canada
732 Posts

Posted - Aug 18 2008 :  10:47:29 AM  Show Profile  Click to see cyclopsitis's MSN Messenger address  Reply with Quote
Computer power supplies have so many stupid parts in them these days that I wouldn't know where to start with fixing one. My suggestion is just replace it and save yourself the hassle of trying to fix something made in china that was not designed to funciton longer then about 370 days. Not very helpful but that is my opinion :P haha
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chandan.ahluwalia
Apprentice

India
126 Posts

Posted - Aug 18 2008 :  12:19:58 PM  Show Profile  Reply with Quote
Thats right. I hope you have replaced it with a corsair like PSU. The repair ain't worth it as it will get fried again!

Edited by - chandan.ahluwalia on Aug 18 2008 12:20:39 PM
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madscientist267
Apprentece

7 Posts

Posted - Sep 16 2008 :  3:41:45 PM  Show Profile  Reply with Quote
The green wire must be held to ground in order for the supply to remain on.

If it aint broke, fix it anyway; there's always SOMETHING wrong with EVERYTHING.
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