can anybody in this newsgroup give me an idea on the detailed operation of an atx psu. i already knew from this group that if i short out black and green connection in the psu, it will power up. i tested it and it worked. but i want to know the concept behind its turning on/off. this is because i have an atx psu here that does not power up even connected to the motherboard or when shorted out. (black-green). i want to troubleshoot it but i do not want to start yet until i already understand how this psu operates so that i may know where to directly troubleshoot the problem. is it in the primary side circuit or in the secondary side or logic/controller for the on/off state.
thnks in advance,