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| Test bench PC power supply issues. |
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| 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. |
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