How can i find out if my power supply is burned out

Boinz · 07-31-2007, 05:09 PM

hi, i received an atx 2.03 psu unit, 300w dc output, and my computer won't turn on, i miraculously managed to turn it on once, and i decided to turn it off and go to bed and work on it tomorow, now it won't work, the power cables are fine, i have a cheap but effective voltmeter.

**Doby** · 07-31-2007, 07:23 PM

If you mean the computer will not do anything when you press the power button then yes the psu could be dead.

To test it remove it completely from the computer, plug into the wall outlet, on the 20/24 pin connector touch the green wire and any black wire with a paper clip.

This should turn the psu on and you can tell by if its fan spins, if it don't its dead. This does not mean the psu is supplying the computer with the proper voltage, only that it is not dead.

Please explain exactly what happens when you push the power button

Boinz · 07-31-2007, 07:26 PM

nothing happens when i push the power button, it doesn't turn on, not the psu, not the processor, no even the LED lights. nothing. zip, nada. will i get shocked if i connect the green and black wire with a paperclip?

**Doby** · 07-31-2007, 07:32 PM

No you will not get a shock, if tou try that and the psu does not turn on it is dead and needs replaced

07-31-2007, 05:09 PM	#1 (permalink)
Boinz Registered User Join Date: Jan 2007 Posts: 11 OS: Windows XP	How can i find out if my power supply is burned out hi, i received an atx 2.03 psu unit, 300w dc output, and my computer won't turn on, i miraculously managed to turn it on once, and i decided to turn it off and go to bed and work on it tomorow, now it won't work, the power cables are fine, i have a cheap but effective voltmeter.

07-31-2007, 07:23 PM	#2 (permalink)
Doby Moderator Hardware Team Join Date: Jan 2006 Location: Central PA (USA) Posts: 8,082 OS: XP sp2/ Vista My System	Re: How can i find out if my power supply is burned out If you mean the computer will not do anything when you press the power button then yes the psu could be dead. To test it remove it completely from the computer, plug into the wall outlet, on the 20/24 pin connector touch the green wire and any black wire with a paper clip. This should turn the psu on and you can tell by if its fan spins, if it don't its dead. This does not mean the psu is supplying the computer with the proper voltage, only that it is not dead. Please explain exactly what happens when you push the power button __________________ Would you like to help TSF fight cancer and other diseases??? JOIN TEAM TSF

07-31-2007, 07:26 PM	#3 (permalink)
Boinz Registered User Join Date: Jan 2007 Posts: 11 OS: Windows XP	Re: How can i find out if my power supply is burned out nothing happens when i push the power button, it doesn't turn on, not the psu, not the processor, no even the LED lights. nothing. zip, nada. will i get shocked if i connect the green and black wire with a paperclip?

07-31-2007, 07:32 PM	#4 (permalink)
Doby Moderator Hardware Team Join Date: Jan 2006 Location: Central PA (USA) Posts: 8,082 OS: XP sp2/ Vista My System	Re: How can i find out if my power supply is burned out No you will not get a shock, if tou try that and the psu does not turn on it is dead and needs replaced __________________ Would you like to help TSF fight cancer and other diseases??? JOIN TEAM TSF