Trying to determine if my PSU is fried.

[Dream Operator]

I was working on my pc today, nothing taxing, internet and things. It suddenly turned off. Now when I push the power button, the fans turn about a 1/2 turn. The green light is lit on the mobo. I have disconnected all external devices and tried a different power cable and outlet.

Any thoughts/suggestions?

Thanks in advance.

 

[mauiblue]

See if you can get another PSU to try on your system. That would be a start. Good luck.

 

[Dream Operator]

Yep, I was just getting to that. I have a 350w sitting around. I disconnected my HD's and removed my video card so I'm not drawing too much on it.

I'll report my findings.

 

[Dream Operator]

I connected this PSU using the 24pin connector and the 4pin, nothing more. Motherboards green light comes on. No response when pressing the power button. I reconnected the PSU that I had been using and got just a blink of power to the fans, not even a turn, just a slight rock.

What would you do next?

 

[vanvock]

I've got an out of the box Enermax that does the same thing. That 380 seems low for a system like that. If you have a meter you can jump the green lead to a black one on the 20 pin connector with it unpluged & check volts from black to orange, yellow & red.

 

[imported_CromsDog]

also you can pick up a PSU tester for pretty cheap. i actualy found one at Circuit City for $13 bucks. Plug the PSU into an AC outlet and the tester into it and there you go. You can even check the indiviual rails pretty easy with a multi-meter.

 

[jonnyGURU]

Motherboard.

 

[acegazda]

Originally posted by: jonnyGURU
Motherboard.

a man of many words. :thumbsup:
bad 24 pin receptor :brokenheart:

 

[kb2114]

Sounds like a fried mobo, sucks to be you.

 

[Dream Operator]

Thank you all for your soft and consoling manner. LOLOLOLOLOL

I will get a PSU tester/Multimeter tomorrow and check out the status of that.

Any thoughts about the cause? PSU too small? I had consulted this forum before I put the dual core in it. It was suggested that I would be OK, but not to OC or add more. Not that I am putting any responsibility on that, just stating that I thought I would be OK.

 

[JEDIYoda]

Originally posted by: Dream Operator
Thank you all for your soft and consoling manner. LOLOLOLOLOL

I will get a PSU tester/Multimeter tomorrow and check out the status of that.

Any thoughts about the cause? PSU too small? I had consulted this forum before I put the dual core in it. It was suggested that I would be OK, but not to OC or add more. Not that I am putting any responsibility on that, just stating that I thought I would be OK.

How would to small; of a PSU fry a mobo?
hmmm

 

[Dream Operator]

I am not sure if too small a PSU, or a PSU failing for that matter could kill a mobo (again, I will test the PSU tomorrow), thats why I am asking. Anything is possible. Fortunately I have my HD's in another PC right now so I can get some important work done.

 

[Bobthelost]

A PSU failing can fry a motherboard, but ime PSUs failing that way are rather noticable (big sodding bang). A small PSU just won't supply enough power to run the machine, which means that it doesn't have the power to run it at all, let alone fry it

A 350W PSU should be able to run your basic system without overclocking alright. Do you have any debugging LEDs or beep codes for that motherboard?

 

[TSCrv]

i have had this problem all to often, i work as a pc repair tech and i dont think the mobo has been fried after i see these symptoms.... allthough i cannot provide a definate solution.... what works for me is either leaving the mobo unpowered for about an hour, resetting the bios, etc... basic troubleshooting...

whats happening is the ps-on circuit isnot latching, weather it because bios is detecting an error, could be under or over voltage, or the psu not sending the pwr-good signal...

hope it helps

 

[Dream Operator]

Not aware of debugging LEDs. No mobo beebs. It doesn't have power long enough to get a beeb.

Let the computer sit over night. Reset the cmos, reconnected the orignal PSU, the green mobo light is again lit, the case power LED turns on for 1/2 a second, nothing else happens.

I also picked up Antecs Power Supply Tester. PSU is good.

Off with the mobo's head I say!