PSU shuts off without (much) load

Azimae

Reputable
May 8, 2014
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4,510
Hello everyone,

I have a computer that was bought in late November 2012. It has had no issues until last night. I fired it up and started a game. After a few minutes, it shut itself off and would not immediately turn back on. I didn't smell anything and had headphones on so I didn't hear any noise. After taking a quick look at it and my UPS, I powered back up. It started, but within a few minutes, it turned off again. After poking around more, I removed the PSU and performed the paperclip test, which was successful. Attached it to an older computer and it ran fine (no load though and stopped testing after 10 min).

The next day, I put it back in the main computer and plugged in only the main components, leaving out extra drives and such. After Windows started, it ran for about two minutes and died. Tried again after a bit to see if I could check voltage. Trying to be quick, the first thing I saw was EasyTune. It showed the following:

3.3v: 3.4, 12v: 11.95

The system shut down again just as I finished reading those. I'm currently blaming the PSU as I don't see anything else wrong (no fat/leaking caps, heat, or other indications). And it's a crap PSU (you'll see). I'm asking friends to borrow one to confirm, but was hoping to see what the community thinks. Thoughts on anything else to check or if the PSU is the issue?

Here's the system specs:

INTEL I7-3770K 3.5 GHZ 8M LGA1155
GIGABYTE GA-Z77-D3H
MSI NVIDIA GTX680 2GB
4GB CORSAIR VENGEANCE 1866MHZ DDR3 (x4)
2TB SATA III 6GB/S 7200RPM (x3)
Apevia ATX-AP900W <--- bleh!

Why that PSU? No idea. The system was configured and paid for by someone else. It was a gift to me so I wasn't complaining. That person assumed I would drop in another GTX680 and a bunch of other things so hence the larger size. If you believe the PSU is the issue, I wouldn't mind a recommendation. Been too busy to keep up. Looking at some Seasonic and Corsair units. Will probably drop down to a 650w or 750w (no plans to add any hardware).

Sorry for the novel. Thanks.
 
Solution
Apevia is indeed one of the worst PSU-shaped objects you can buy, consistently failing competent technical reviews. That one, when new, I believe jonnyguru found to be actually good for 650W. At its current age, I'm sure it is less, and not enough for your system.
I would recommend a Seasonic-built unit, such as their own or XFX. Corsair "CX" and "GS" are made by CWT, using inferior Samxon capacitors that can't take heat.
Apevia is indeed one of the worst PSU-shaped objects you can buy, consistently failing competent technical reviews. That one, when new, I believe jonnyguru found to be actually good for 650W. At its current age, I'm sure it is less, and not enough for your system.
I would recommend a Seasonic-built unit, such as their own or XFX. Corsair "CX" and "GS" are made by CWT, using inferior Samxon capacitors that can't take heat.
 
Solution

plaintuts

Admirable
we better not jump to conclusions about your other components, so if you can test your system with a different psu, that would be best, then post back here with the results.

as for recommendations, a seasonic of 500 watts will be sufficient for your system. or a corsair hx series.
xfx looks good too, but I haven't used them.
 
XFX PSUs are [all] built by Seasonic, so they'd be good. Iirc, a GTX680 may need more than 500W though, particularly to operate in an efficient part of its range. He's also got three hard drives, so I think a larger PSU (e.g. 650W) is a good idea.
 

Azimae

Reputable
May 8, 2014
2
0
4,510
Okay. I didn't get to test with another PSU yet, but I was able to put the suspect PSU through some testing on my old computer. Ran for about 10 minutes and shut down at the first sight of any load (opened a browser). Further tests were gradually shorter and the last couple tries didn't make it through POST. After the last fail, I laughed at it and gave it a light tap on the side (the same tap moves my mouse a couple inches). When I did that, it fired back up for a few seconds. Hmm... After turning it off, but still plugged in, I did it again and it turned on for a second. Extra and harder taps did nothing (unless I turned it on again). Just thought that was kind of interesting. So I'm still borrowing one to test and hopefully keep "testing" with it until I get a new one.

Onus, "PSU-shaped object" is a great description. Did my reading and think I'll go with a Seasonic built PSU. I agree with going with something larger than 500W. Given what I have and the high possibility of adding more in the future, I think it makes sense. And dang, looks like I missed a G-750 for $80 ($115 list with promo, rebate, and free shipping) yesterday on Newegg (up to $130 + shipping now). More than what I need, but that would have been a nice price.

And thanks to you too, plaintuts, for trying to be the voice of reason. Definitely need that at times.