dead psu


can anyone direct me where to troubleshoot a dead atx psu. a green wire

was already shorted to ground (black) but nothing happens.

i read from the net that almost all concepts of AT and ATX psu are the same.

The differences are: that ATX PSU always has +5V standby (what color of

a wire is the sb?), it powers up through logic circuit (maybe through ic w/c is in the psu itself) and that it can be controlled by software.

i already have repaired AT psu many times but i do not try ATX yet.

thanks in advance,


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