Main > Main Forum
Test bench PC power supply issues.
Pages: (1/1)
shardian:
This weekend, I started to go thru my box of Gottlieb system 1 cpu boards. I fixed one up for the bench, applied the power leads, and powered on the power supply -- then nothing. I figured the board was dead, so I checked voltages, also nothing. I pulled the leads of the power supply and checked them directly - nothing again! What would cause an AT power supply to power on, yet not supply +5, and -12???
shardian:
No responses???
CheffoJeffo:
Assuming that the fuse isn't blown:
Shorted output diode ?
Bad PWM Controller IC ?
Bad "Kick Start" Circuit ?
(I just copied those from Randy Fromm's article on the subject ... I haven't actually read it yet).
shardian:
I would assume the fuse isn't blown since the unit powers on (fan runs).
I guess I'll just have to yank a new one.
Pages: (1/1)