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Corsair PSU Failure?

post #1 of 21
Thread Starter 
So, I've been using this HX520W Corsair PSU for about two years now, and before that it was used for probably 1-2 years by one of my good friends.
For the last six months I've run with the system below, which demands more power than anything else I've ever run on it. Plus, I overclock.
Anyway, last night while it was shutting down when I saw artifacts all over the screen and then it had a BSOD... I didn't really think too much of it, other than "I'll have to sort this out tomorrow" and when I went to turn it on this morning, nothing happened.
My first thought was that the PSU had died, so I took that out and put a paper clip between the green power wire and one of the black ground wires and pressed the switch... The PSU just sat there for about 5 seconds and then the fan started spinning. So (it being modular) I decided to only plug the fans back in and again after about 5 seconds the PSU was on and all my fans started working.
Then I tried to plug it into only the motherboard and the fans, thinking it would at least start something if I pressed the power button, but nothing happened. And still, nothing happens when everything is plugged in...
What's more, I don't have any other PSU that is even remotely capable of running my system to test it with. I'm not sure what to think, honestly... It could be a motherboard failure, a CPU failure or a 12v rail failure... Is it possible that one rail could have failed while the other two rails remain working? Keeping in mind that this has three 18Amp 12v rails. Maybe I'm just desperately hoping it wasn't my motherboard...

Someone please help...
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post #2 of 21
...it may not be the motherboard, but I'd test that first. It could also be the PSU or the graphics card, but frankly your rig isn't stressing that PSU one bit, I probably is under 300W at full tilt, even OCed. Also if the PSU starts when jumpstarted it is a pretty good indication it's running fine. You could jumpstart it and at the same time measuring the +12V and +5V rails to see if it provides the right voltage.

Hope this helps
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post #3 of 21
Thread Starter 
Thanks for the reply...

But I was wondering, how would I go about testing the voltage? I have a volt meter but I don't know where I'd put the two probes...
Also, since I started this thread I tried taking out the video card, all of the memory and every other cable connected to the motherboard out but still no luck. If the PSU is working fine, then that narrows it down to the CPU or the motherboard, seeing as they are the only two things connected to it. Is there a way to test for that apart from taking my CPU out and testing a different one?
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post #4 of 21
Corsairs die just like everything else, they are not PSU gods. (Although plenty think they are)
    
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post #5 of 21
Have you tried clearing your CMOS?
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post #6 of 21
Quote:
Originally Posted by Tizmo View Post
Have you tried clearing your CMOS?
This could be a good idea, you never know
Quote:
Originally Posted by btgrant View Post
Thanks for the reply...

But I was wondering, how would I go about testing the voltage? I have a volt meter but I don't know where I'd put the two probes...
Also, since I started this thread I tried taking out the video card, all of the memory and every other cable connected to the motherboard out but still no luck. If the PSU is working fine, then that narrows it down to the CPU or the motherboard, seeing as they are the only two things connected to it. Is there a way to test for that apart from taking my CPU out and testing a different one?
If it's between the mobo & CPU I'm 99% sure it's not the CPU. If you kept is at safe temps and with reasonable voltage there's no reason for it to go.

You can connect the Vmeter on a MOLEX connector (like the one for PATA HDDs) between the yellow (+12V) and black (ground). Red is the +5V, so check the +5V between red & black. You can check other +12V rails, the idea is to connect the Vmeter between yellow and black.
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Centurion
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post #7 of 21
If your PSU is spinning, it's a good chance that that isn't your problem. I highly doubt it's your CPU, those rarely rarely rarely fail. It could be the morherboard, try clearing CMOS and post back...
 
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noVaKan3: Retired
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post #8 of 21
Quote:
Originally Posted by dragosmp View Post
You can connect the Vmeter on a MOLEX connector (like the one for PATA HDDs) between the yellow (+12V) and black (ground). Red is the +5V, so check the +5V between red & black. You can check other +12V rails, the idea is to connect the Vmeter between yellow and black.
That's how to do it.
And if you wish to test the +3.3V rail, use an orange and black wire on your main 24-pin ATX connector.

And I wanted to add that your system probably draws ~250W from the PSU, max. When you said that was the most power hungry system you've ever connected to that HX520, well, that may be the case, but it's still a very small load -- just wanted to make sure you were aware
post #9 of 21
Thread Starter 
Thanks again for all the replies.

I should have mentioned before that clearing the CMOS was one of the first things I tried, my bad.
Also, I tested every rail the you guys said and they were all delivering slightly more than they were supposed to, so it appears that they're all fine.
Which, again, leaves my motherboard and my CPU... So, in the interest of saving time and effort, would there be a way to be absolutely certain of which component is dead without testing another CPU?
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Project Omnia
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post #10 of 21
Just to be certain, I would run memtest86+ to check if there is anything wrong. If there is nothing wrong with the memory, then we the list of possible problems is shortened.

As for testing the CPU and motherboard, there really is no other way other than to try another CPU I'm afraid.
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Black Dog
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