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PC sometimes won't turn on until I unplug it from the wall for a 30 seconds or so. Faulty PSU? (self.pcmasterrace)

submitted 5 months ago* (last edited 5 months ago) by hypertown to c/pcmasterrace

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Just like in the title my PC has an issue when it won't turn on. Power button does nothing, fans do not spin, PC is completely dead. First time it happened was when I put it to sleep, sometimes it wouldn't wake up so I just avoided putting it to sleep as a temporary solution that become quite permanent... Simple power off worked well enough but recently it won't start even when I turn it off. If that happens I need to flip the power button on the PSU for a 30 or so seconds then it turn it back on and I can start PC no problems.

From what I read on the Internet people suggest faulty PSU. Is there a way to confirm that? I don't want to buy a new PSU if the old one is still good. It has little over 5 years so it's not exactly new but certainly not too old.

I also had one crash that looked like PSU fault since PC just shut down suddenly but I blamed it on some power drop in the grid at the time.

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[–] [email protected] 3 points 5 months ago (6 children)

At least you can see blown capacitors sometimes.

[–] hypertown 2 points 5 months ago (5 children)

I might try to disassemble PSU at some point to check since I don't see any on GPU or Motherboard.

(Also I know it can be dangerous but I know my way around high voltage from previous work so I should be fine)

[–] [email protected] 3 points 5 months ago (2 children)

To add to what others have said. Since your computer runs fine when it's on I wonder if you'll see anything off but I suppose it's worth a shot as it's easy to test. Look up a 24pin diagram and use a multimeter to test if the pins are outputting the correct voltages.

[–] hypertown 1 points 5 months ago (1 children)

In that weird can't power on PC state or it doesn't matter?

[–] [email protected] 2 points 5 months ago

Try the weird state and the seemingly proper on state

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