I don't have a schematic or really know SMPS feedback and monitoring.
-Most SMD parts on the back seem to test fine in circuit anyway.
-the PFC MOSFETs, driver Mossies switcher mossies, and the diodes before the secondary side seem to test fine
I haven't used my little 200Khz DSO138 scope on it yet, I just zapped that K18A60V.
The PSU just reverts to standby mode after about 2-3seconds, with the 5VSB working, and the PFC being told to shutdown.
The main PWM chip, its getting power
After a failed start and it idles, I have to wait a minute for some cap to discharge before it will restart the same....where it will power a 12V fan for 2-3seconds. I never probed that yet either.
If some big capacitor on the secondary side failed or is failing , what should I be checking ?