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Failed PSU twice now

post #1 of 12
Thread Starter 
I have a Corsair AX850 Fully modular. For some reason they keep failing on me. I am on my second one in 60 days. My build is in my sig nothing to extreme. First one gave no warning PC just powers off try's to reboot fails try's again and then nothing. The second one did pretty much the same thing only now this one will only power on the CPU or at least the pump and the fans for the h100i and my lighting (2 led strips) nothing else runs. I am at a total loss. I have no idea what is causing this. After the first one failed and was replaced the PC ran fine no other issues. Anyone have any ideas? Please?
post #2 of 12
Do you have a surge protector? Is your area known for dirty power?
Do you have anything wired for "7v" by grounding via 5v?
post #3 of 12
Thread Starter 
No I have never had any power issues here and yes I have a brand new surge protector.
post #4 of 12
When you say it will only run the CPU, what exactly do you mean?
Does the thing POST?
post #5 of 12
Thread Starter 
Nope it doesn't post. The h100i and the fans that are run off of it turnon but that's it. Also the green "OK" light on the mobo lights up. No other fans run and the Blu-ray player doesn't light up.
post #6 of 12
Do you have a multimeter? That sounds less like a PSU issue than a Something Else issue.
post #7 of 12
Thread Starter 
Yes I have a multimeter.
post #8 of 12
Start the computer up and check the voltages being delivered.
Yellow wires are 12V (+/-5%).
Red wires are 5V (+/-5%).
Orange wires are 3.3V (+/-5%).
If those are all present you most likely have a connection issue somewhere, or a hardware (but not PSU) issue.
post #9 of 12
Thread Starter 
The PSU is totally dead now. All I get is the green LED light on the mobo nothing else. Getting a test unit from a friend and if it works then I know for sure that it is a faulty PSU.
post #10 of 12
Thread Starter 
Tested with a borrowed Rosewill 750w and the computer fired up with everything running including all the fans and lighting. I guess that solves the problem.
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