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Any way to test if a PSU is good or not??

T

tbird2340

Senior member
Ok. I had these two PC's setup for my family and they've been in a corner for about a month. I go to fire them up and both of them out of the blue aren't working.

The one I took out everything but the video card and one stick of ram and I hear a constant like clicking noise (not the HDD) and I get no video or anything.

The other I get a high pitched whine when I turn it on and no video.

I want to test if the PSU's I'm using are good but I don't have an extra spare PC to test them in.

Does anyone have any ideas of what might be wrong in either situation?
 
Hi

I have a couple old PSUs that 'click' - I put them in a pile with the rest of the bad PSUs. Try to determine if the noise is coming directly from the power supply itself or not. It could also be an internal fan or perhaps even the. heatsink/fan combo but it sounds like you got it isolated pretty much to the PSU area at least.

To me it sounds like you have enough parts to troubleshoot - this is assuming at least one of the PSUs is good. Pick one of the motherboards to test with and hook up each respective power supply and the barebones config which you mentioned. I like to have my finger on the on/off switch on the back of the PSU when testing individual units. This is a precautionary measure but one you should definitely take considering one or both of the PSUs is on the fritz.

If you're looking to have one running system when all is said & done, hopefully you can put together a mish-mash of a PC from the parts which you have on hand. Good luck...
 
Trouble with a voltmeter is that it takes an average over a few tenths of a second.
A fluctuation/dip of a few hundreds of a second will cause a problem with your system.

Re- PSU tester, never heard of that - sounds good if you can get one for that price
 
OK. I got one of the PC's to work. It was running fine and I left it on all night last night. I come in this morning and it's sitting at the POST screen. I power it off and back on and now it's making that ticking noise that almost sounds like a modem sound or speaker popping but I pulled the modem out and the speaker isn't plugged in. I'm testing one of the extra PSU cables and the 12V line is testing at 10.7V.

Any freaking clue??
 
if psu is giving out 10.7v @12v rail - try a new one before you damage anything - at the moment it is only underpowered, but if there is a surge.........
 
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