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Is my PSU broken?

Last response: in Components
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September 9, 2010 1:48:47 AM

Hello guys, first post on tomshardware. anyways

My power supply is acting weird,i tried having my normal setup and everything unplugged but it doesn't turn off until i flip the switch. Also i can't get the computer to start up, when i press my power button on the front panel of the case and the motherboard it turns on for 2 seconds then turns off in a loop. So is it broken?




Specs
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PSU:Ultra X3 1000 watt
Mobo:EVGA P55
GPU:MSI GTX 460
CPU:i5-750
RAM:G.Skill 2x2GB

More about : psu broken

a b ) Power supply
September 9, 2010 4:50:35 AM

Welcome to the forums! :) 

Has this always happened? I wouldn't immediately blame to the PSU, Ultra's not a very trustworthy brand but 1000 W should be far more than enough, and I doubt you'd be using > 50% of what it's rated at. It could be just faulty, but there might be other components too.
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September 9, 2010 10:08:27 AM

You got a very big rig their, 1000W is too much for that. Anyway remove the ram, video card, hard disk, optical drive - just the motherboard and the psu then turn it on. If you hear some beep (assuming your motherboard have one) it means it still alive if not try other psu. If you did hear some beep then insert the ram then the video card SECURELY into it's slots (don't forget to power off when you insert them). Usually when the ram or video card were not inserted securely the motherboard will protect itself and turn it off.
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September 9, 2010 3:02:52 PM

Lmeow said:
Welcome to the forums! :) 

Has this always happened? I wouldn't immediately blame to the PSU, Ultra's not a very trustworthy brand but 1000 W should be far more than enough, and I doubt you'd be using > 50% of what it's rated at. It could be just faulty, but there might be other components too.



No it just recently happened, like yesterday.
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September 9, 2010 3:05:06 PM

dEAne said:
You got a very big rig their, 1000W is too much for that. Anyway remove the ram, video card, hard disk, optical drive - just the motherboard and the psu then turn it on. If you hear some beep (assuming your motherboard have one) it means it still alive if not try other psu. If you did hear some beep then insert the ram then the video card SECURELY into it's slots (don't forget to power off when you insert them). Usually when the ram or video card were not inserted securely the motherboard will protect itself and turn it off.



no beep, it just turns on for a few seconds and turns off over and over again. when i first installed my new parts (gpu,ram,processor,mobo) it worked for awhile.
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September 9, 2010 4:25:42 PM

just tried benching it, same problem. The power supply stays on even if everything is off, as soon as i flip the switch on the back it turns on. I think thats why my computer is turning off and on. anyone else know why?
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September 9, 2010 7:17:53 PM

Ordered a XFX PSU 650W. Will let you guys know if the psu fixes the problem.
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September 9, 2010 7:34:18 PM

I think it would be cheaper to buy a power supply tester, they usually only cost about 20 or 30 bucks and pay for themselves very quickly. I`m guessing you didn`t have another PSU to test from right? If replacing the PSU doesn`t work, then you really have HW problems :(  Or, it could be the switch on the case! I`ve had that brought to me more than once, where the switch doesnt fully connect or gets stuck out of phase.
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a b ) Power supply
September 9, 2010 7:49:53 PM

I have no confidence in power supply testers unless you also have oscilloscopes and other specialist test gear, the only reliable test of a power supply is to substitute it with a known good one.
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September 14, 2010 1:22:46 AM

turns out it was broken, new psu came today and its working without any problems.
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!