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computer help - power supply failure ??
hyiu:
Hi All:
My desktop computer died on me when I'm not in the room...
It was on when I left the room, and when I'm back a couple hrs later, it was off... :-[
From the look of it, I didn't smell any burned parts....
I tried to turn it on, but nothing...
like no fan turns (not even the one from power supply...)
no lights.. no nothing...
I want to know... is there a way to check if the power supply is dead ??
(regularly, when I give power to the desktop, I'll need to push the push button to start the machine... (and before that... the power supply fan doesn't turn...)
when a power supply is not connected to a mother board... how can we check if its working ?? is there a way to check that ?? I do have a multimeter...
is there a way to know if it is the power supply ?? or the mother board ??
(sorry... I have no spare power supply to try it on the motherboard...)
should I go buy a power supply from some store... test it, and if its not the power supply, return it ?? (I don't really want to do that if I have a choice...)
Any suggestions are appreciated...
Thanks for your help...
SirPeale:
If it's an ATX, unplug it from the motherboard and all drives. Take a paperclip and short pins 14 and any ground together. Pin 14 is usually a green wire. If it powers up, you have other issues.
shardian:
Have you already flipped the switch on the back of the machine and let it sit for a while. When power flickers at work, sometimes my machine will not turn on at all - nothing comes on. Once I killed the switch on the back for a few minutes, everything works fine.
So, make sure you try that before going and buying stuff.
AtomSmasher:
Power supplies are the most common component to break in a computer, so it wouldn't be surprising if it is broken. Peale's trick should work, but I generally just test mine by hooking up a power supply from another computer into it and see if that fixes the problem, of course you have to have another fairly recent computer around to do that.
hyiu:
--- Quote from: Peale on July 09, 2007, 10:44:10 am ---If it's an ATX, unplug it from the motherboard and all drives. Take a paperclip and short pins 14 and any ground together. Pin 14 is usually a green wire. If it powers up, you have other issues.
--- End quote ---
I have unplugged all the plugs, and I found pin 14 (and it is green !!).
pin 15, 16, and 17 are all black...
do you know exactly which pin is ground ??
that is better than me guessing which is ground....
sorry if its a dumb question...
just want to be double sure before I short anything electrical.
Thanks, and I'll keep you guys informed...
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