How To Check Atx Power Supply Without Motherboard. Often used in assemblingtesting PC water cooling systems BTC Miners testing lights fans hard drives or the power supply itself etc. Ideally you should test a component that you know works in another setup.
So switch off the power switch. The standard ATX plug will also have seven ground or black wires. Check the power supply.
When you press the power button on your case it jumps the green wire to a ground telling the PSU to turn on.
Test with minimal components isolating the possible cause. Bend your paper clip so the ends can be inserted into pin 4 and pin 5. If youre using a PSU jumper insert the ends into pin 4 and pin 5. Can turn on the power without the motherboard.
