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altis · 11-03-2004, 15:30

Fans use the 12V supply and I would guess that the LED is powered from 5V. It is possible that the 12V has failed but the 5V has not. Locate a spare disk drive connector and stuff your voltmeter in there. The two black wires in the middle are 0V, the red wire is +5V and the yellow is +12V. If you see one supply but not the other then the PSU is probably stuffed.

11-03-2004, 15:30	#6
altis Inactive Join Date: Jun 2003 Location: Warrington ntl:81304 Altitude: 12m (and falling) Posts: 4,499	Re: help PC trouble Fans use the 12V supply and I would guess that the LED is powered from 5V. It is possible that the 12V has failed but the 5V has not. Locate a spare disk drive connector and stuff your voltmeter in there. The two black wires in the middle are 0V, the red wire is +5V and the yellow is +12V. If you see one supply but not the other then the PSU is probably stuffed.