Can't seem to get this PSU to turn on. Can you help?
This is a used unit rescued from the thrift store. Yes, it may be dead, but I have looked inside and see no charring and smell no smoke. I have brought others up successfully. I plan to use this PSU as a bench power supply for hobby work.
The PSU is a generic design of about 250 watts with +3.3V, +5V, +/-12V and +5Vsb. It has only a mains receptacle and no power-on switch, or mains voltage select switch.
The mb connector has a PS_ON line (green pin 14 of 20) that should be set to GND to turn the unit on. Disconnect this pin to put the unit into standby and provide +5V to only some electronics via purple pin 9 of 20.
The PWR_OK wire (gray pin 8 of 20) is a status signal FROM the PSU to the main board.
I can't get any voltage out of this unit on any connector whatsoever. I tried jumpering PS_ON to GND, but since the unit doesn't present any power, this seems unlikely to work. Any ideas, please?
Link to info:
s://pinouts.ru/Power/atxpower_pinout.shtml
This is a used unit rescued from the thrift store. Yes, it may be dead, but I have looked inside and see no charring and smell no smoke. I have brought others up successfully. I plan to use this PSU as a bench power supply for hobby work.
The PSU is a generic design of about 250 watts with +3.3V, +5V, +/-12V and +5Vsb. It has only a mains receptacle and no power-on switch, or mains voltage select switch.
The mb connector has a PS_ON line (green pin 14 of 20) that should be set to GND to turn the unit on. Disconnect this pin to put the unit into standby and provide +5V to only some electronics via purple pin 9 of 20.
The PWR_OK wire (gray pin 8 of 20) is a status signal FROM the PSU to the main board.
I can't get any voltage out of this unit on any connector whatsoever. I tried jumpering PS_ON to GND, but since the unit doesn't present any power, this seems unlikely to work. Any ideas, please?
Link to info:
s://pinouts.ru/Power/atxpower_pinout.shtml
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