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how long can a power supply hold a charge

post #1 of 20
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So I'm thinkiung of autopsying my BFG 650W psu and replacing the fans. they screech like a banshee and I want an ultra quiet PC. Almost there, only the psu left. I am aware it will break the sticker and kill teh warrantiez but hey what're you gonna do.. only cost me seventy bucks. worst things have happened....

So, before I go fumbling in there, how long should I wait while it's off before I can open 'er up?
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Minotaur
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post #2 of 20
Well, if you stay clear of the capacitors you should be alright. I took some fans out of an old one for spares a while ago and It had only been out of my case for a few hours. People may have different opinions on this, but meh, I didn't die, lol.
post #3 of 20
Unplug your main power cord from the PSU and leave it sitting in your PC for at least a few hours. The mobo and resistence should drain the caps. Still be careful when working with a PSU. You should be fine just replace a fan. Just dom't go poking things... especially the large capacitors.
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post #4 of 20
A cat is only lucky so many times. I got a helluva shock from a CRT I opened once fooling around I'm lucky my dad found me when he did. I was flopping around and stuff. And this thing had been unplugged for at least a week or two.
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post #5 of 20
When I opened up mine to take off the grills it had, I just unplugged it and pressed the power button on my case. I didn't get shocked but I may have been lucky.
post #6 of 20
They can hold charge for a very long time.

Best thing to do is unplug it and keep it plugged in as DuckieHo suggested.

Then take it out and try and jump start it with a paper clip. To make sure ALL charge is released.

However this is still not a guarentee.
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post #7 of 20
Find a screwdriver with a plastic or rubber handle and a long length of 14 gauge or thicker (lower gauge) wire. Wrap the wire around the screwdriver, the metal part, and stick the other end of the wire into the ground or "earth" hole on your wall outlet. Now poke around with the screw driver, connecting the end of caps together so they discharge. Just don't be standing in water, or on anything metal while doing this. Also remember not to touch the metal part of the screwdriver!
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post #8 of 20
Quote:
Originally Posted by Mootsfox View Post
Find a screwdriver with a plastic or rubber handle and a long length of 14 gauge or thicker (lower gauge) wire. Wrap the wire around the screwdriver, the metal part, and stick the other end of the wire into the ground or "earth" hole on your wall outlet. Now poke around with the screw driver, connecting the end of caps together so they discharge. Just don't be standing in water, or on anything metal while doing this. Also remember not to touch the metal part of the screwdriver!
Your whole idea of sticking things into an outlet doesn't bode too well... Lol
post #9 of 20
Get out your multimeter, and experiment with ways of discharging the capacitors. Just don't touch them.
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post #10 of 20
Quote:
Originally Posted by TwIsTeDbOi View Post
Your whole idea of sticking things into an outlet doesn't bode too well... Lol
There is no charge in the ground line. Go stick a screwdriver in it. Unless who ever wired your house did it wrong, the line will NOT be hot.
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