Will post more details tomorrow, I have a corsair ax1200 psu in the workshop for repair, there is a hard short across the line in rails, investigation found two smd diodes D102 and D103 shorted on main board,
also several 15 ohm resistors gone bad and the diodes next to them
see next pic
removed the daughter board (DSP) and located c841 which went had failed in a bad way, and D811 failed and D812 failed,
The DSP board provides as far as I can work out the 5 volt supply and standby stuff, I am not finding anything obviously shorted around the daughter board that would account for this damage.
pic below
also several 15 ohm resistors gone bad and the diodes next to them
see next pic
removed the daughter board (DSP) and located c841 which went had failed in a bad way, and D811 failed and D812 failed,
The DSP board provides as far as I can work out the 5 volt supply and standby stuff, I am not finding anything obviously shorted around the daughter board that would account for this damage.
pic below
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