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U4CX · 06-14-2007, 02:14 PM

Hello all,

Basically we have a computer for a press. There was a power outage last week and the thing has stopped working since then. The computer is still able to turn on, and Windows runs fine. But the press stopped working. I looked on the motherboard of the computer, then I saw 4 red LED lights all turned on and the labels for them are

D1 +12V R5
D2 -12V R6
D3 -5V R7
D4 +5V R8

Can someone tell me in general what are those lights for on the motherboard?

Thanks very much.

06-14-2007, 02:14 PM	#1 (permalink)
U4CX Registered User Join Date: Sep 2006 Posts: 103 OS: XP	4 Red LED lights on MoBo Hello all, Basically we have a computer for a press. There was a power outage last week and the thing has stopped working since then. The computer is still able to turn on, and Windows runs fine. But the press stopped working. I looked on the motherboard of the computer, then I saw 4 red LED lights all turned on and the labels for them are D1 +12V R5 D2 -12V R6 D3 -5V R7 D4 +5V R8 Can someone tell me in general what are those lights for on the motherboard? Thanks very much.