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possible failed/faulty power supply


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#1 stryke297

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Posted 31 October 2013 - 04:53 PM

OK I've got a desktop that starts but won't boot(different issue) in my troubleshooting I decided to start up my power supply with a paper clip and test the voltages.

 

The power supply is an apevia iceberg 680w.  It's at least four years old, and I have replaced two fans and added another fan to the power supply, after which it worked for two years.

 

Voltages are:

Molex: Yellow wire: 12.01v, Red wire: 5.20

PCI-e expansion 6-pins: yellow wires: 12.01v

4/8pin CPU: yellow wires 12.01.v

 

I'm told the yellow wire voltages should read 12.35v-12.4v which means that my numbers are low by an amount that I would think is considerable.  I'm told the red wire voltages should be "around" 5v, I would assume 5.0v-5.05v meaning my voltages for red are considerably high.

 

20/24 pin:

Orange: 3.41   Red: 5.20     Yellow: 12.01  purple: 5.06      grey: 5.20   blue: 11.53       green: could not get a reliable number

 

should be:

Orange: 3.41    Red: 5.05     Yellow: 12.35  purple: 5.07     grey: 5.09    blue: 11.34       green: 0.06  

 

I tried four different black(groud) wires with the green, one gave me a number that kept rising, two gave me no reading, and a fourth gave me a beeping noise from my multimeter after a couple seconds.

 

As you can see, my orange, and purple are close.   

My red, yellow, grey and blue are not.

I think the green is pretty important, and I'm pretty sure that the readings I received were not good.

 

I would assume that my results are bad, but I'm not sure about the tolerance on these values.  Can anyone confirm my suspicions that this psu is faulty?



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#2 Roodo

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Posted 31 October 2013 - 06:25 PM

Every thing looks good. The greys at 5V that's a self test for the supply
to tell you all voltages are fine (within specs). green should go low when connected ground

Edited by Roodo, 31 October 2013 - 06:26 PM.


#3 stryke297

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Posted 01 November 2013 - 01:10 PM

So I guess this is solved.






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