Last night a household waterpump tripped the electricity box safety switch at my house. Unplugged the pump and reset the switch – household all seemed ok.
I later discovered my i3 server stopped working when the safety switch tripped. I tried all methods of diagnosis, and discovered it was the power supply (6month old SeaSonic 450W OEM V3 80Plus Gold PSU). The PSU had stopped working completely, no light on the motherbaord LED either. I swapped with an old PSU and it booted fine.
Went to remove & return under warranty this morning, and decided to give it a last test – and it worked!
My question is does this sound like a faulty PSU or a failsafe in the PSU?
I sometimes have an issue with static buildup in the psu. My connections aren't grounded well, and once or twice I've had the power trip after which the psu wouldn't power up. All I need to do then is keep wall switch off and power on the PC. The case fans spin a bit and any built up charge is then discharged through the grounding.