is my psu dead?

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Mr_Noobie

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Jul 19, 2013
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I pressed the power button of my PC and I heard a single clicking sound but my PC would not turn on. I see the motherboard power led on but, no fans are on in my case, gpu coolers and CPU cooler. Has my PSU kicked the bucket?
 
Solution
Gam3r01
If you still have that psu laying around, you can try that one, if not removing the graphics cards should tell us what the issue is. This is one way to check the psu.

Try to verify (as well as you can) that the PSU works. If you have a multimeter, you can do a rough checkout of a PSU using the "paper clip trick". You plug the bare PSU into the wall. Insert a paper clip into the green wire pin and one of the black wire pins beside it. That's how the case power switch works. It applies a ground to the green wire. Turn on the PSU and the fan should spin up. If it doesn't, the PSU is dead. If you have a multimeter, you can check all the outputs. Yellow wires should be 12 volts, red 5 volts, orange 3.3 volts, blue wire -12 volts, purple...
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Gam3r01

Gam3r01

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Jan 12, 2013
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Since you are still getting motherboard lights, try taking out your graphics card and start again. My rig had a CX500 die from overdraw most likely, and would not turn on. Once I pulled out the card I turned on all fans and POST beeped. If that happens it means its not producing the power needed to run the whole system and requires replacement. What are all of your specs and psu?
 
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computer_nugget2

computer_nugget2

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Jul 26, 2013
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also, is the amber light a blinking light? or is it a solid amber light?

a blinking light indicates a problem with an installed device. and a solid light indicates an internal power problem.

the service manual says it was a 750W power supply. it must have been really cheap then.
 
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Mr_Noobie

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Jul 19, 2013
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It's my old back up pc with a two month old PSU. Ocz Zx series 850w gold.
1090t phenom ii x6
Asus m5a97 r2.0 mono
Adata 4x2gb
2xToshiba 500gb
2xAsus hd6850 GPU

I replaced the old cyberpower pc house brand 800w non-80 plus rated PSU(which was still kicking when I retired it) with this ocz PSU 2 months ago. :(
 
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Gam3r01

Gam3r01

Titan
Jan 12, 2013
25,417
976
115,440
If you still have that psu laying around, you can try that one, if not removing the graphics cards should tell us what the issue is. This is one way to check the psu.

Try to verify (as well as you can) that the PSU works. If you have a multimeter, you can do a rough checkout of a PSU using the "paper clip trick". You plug the bare PSU into the wall. Insert a paper clip into the green wire pin and one of the black wire pins beside it. That's how the case power switch works. It applies a ground to the green wire. Turn on the PSU and the fan should spin up. If it doesn't, the PSU is dead. If you have a multimeter, you can check all the outputs. Yellow wires should be 12 volts, red 5 volts, orange 3.3 volts, blue wire -12 volts, purple wire is the 5 volt standby. The gray wire is really important. It sends a control signal called something like "PowerOK" from the PSU to the motherboard. It should go from 0 volts to about 5 volts within a half second of pressing the case power switch. If you do not have this signal, your computer will not boot. The tolerances should be +/- 5%. If not, the PSU is bad.
If you hook up a case fan you can see if it turns over.
 
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