I have a 420w power supply and i'm pretty sure it's not working, but I don't know how to check for sure. How do I check. If I take the power supply out of the computer, and plug it into a wall outlet, and turn the switch on the back, shouln't something happen? Shouldn't the fan turn on or maybe there should be some noise or something? Can someone help me?
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Power Supply Might Be Dead
- Thread starter gwoody
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[Spectre]
I Will Find You
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You will need to jump the PSU by using a paperclip or some such to connect the green wire with a black wire in the ATX connector.
larrymoencurly
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Do the paperclip trick with a hard drive connected to the PSU because that will check both the +12V and +5.0V rails for accuracy. OTOH I don't know how to check the +3.3V without a mobo or digital multimeter.