How can I make sure that my PSU is actually faulty?

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BigBrownie

Commendable
Jan 29, 2017
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So today when I tried to power up my system nothing happened. I am almost convinced that it is either a PSU or Powerbutton fault since the system is ancient (Sandybridge Release). However, I have no idea how to check where the fault actually lies...

Here are some pictures, please excuse the wrong order:
http://imgur.com/a/27f4D

I'd be happy if it was only a PSU fault but the button was getting harder to press recently and occasionally failed. The PSU on the other hand was under alot of stress, too, because the system it was powering was probably more powerconsuming than what the PSU is made for. Unfortunately, I don't own another PSU so I can't check.

Thanks for reading, I'd be glad to receive any help :) Cheers
 
Solution
1LiquidPC
You could try the "paperclip test". A quick google search will detail the procedure. Basically, you remove the power cables from everything after unplugging PSU from wall, and use a paperclip as a jumper on the main 24pin connector. One end goes into the green wire PS_ON connector slot, while other end goes to an adjacent black ground slot. By rigging up this way, the PSU should turn on when plugged into the wall outlet again. However, if the PSU is a non-standard ATX model, I wouldn't try this until sure its safe. IBM and other OEMs were known for proprietary power supplies and motherboards, so the wiring could be setup differently.
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BadActor

BadActor

Expert
Ambassador
Oct 31, 2015
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Follow the wires from the power button to where they plug into the motherboard. Unplug the wires and use a screwdriver to short across the two exposed pins. If it boots up, the switch or wiring is bad. If it doesn't, you'll have to troubleshoot further. The quickest way to eliminate the PSU is to swap another known good PSU in and see if that works.
 
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1LiquidPC

1LiquidPC

Splendid
Oct 11, 2014
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You could try the "paperclip test". A quick google search will detail the procedure. Basically, you remove the power cables from everything after unplugging PSU from wall, and use a paperclip as a jumper on the main 24pin connector. One end goes into the green wire PS_ON connector slot, while other end goes to an adjacent black ground slot. By rigging up this way, the PSU should turn on when plugged into the wall outlet again. However, if the PSU is a non-standard ATX model, I wouldn't try this until sure its safe. IBM and other OEMs were known for proprietary power supplies and motherboards, so the wiring could be setup differently.
 
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