electrical engineering community.
I would like to ask for your help in this matter - my computer PSU does not start. I got an old PSU which I'd like to make something very useful of it: transforming it in a lab bench power supply like the one in this video. I started by cutting the heads of the wires and sleeve them. Next, I tried to start the PSU by wiring the green cable (power-on) to a black cable (ground), but I had no success... I wonder if it has some protection activated or if I can't have the other wires disconnected.
Thanks in advance.