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12V spot on mobo went bad?

post #1 of 21
Thread Starter 
I just turned on my sig rig, and it turned on for 5 seconds then turned off. I have taken it completely apart. It seems everything works if I dont plug in the 8pin connector (12V). Everything (including CPU and graphics card fan) seems to run. If I plug in the 12V; however, the mobo goes back to the 5 seconds on and off thing again. Any suggestions?
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post #2 of 21
If you have a multimeter you can test the voltages out of it.

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post #3 of 21
It sounds as if there is a problem with a the power supply and not the board. The board is trying to draw power from the PSU, that it can't supply possibly. If you have another PSU, try to test it with that.
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post #4 of 21
Thread Starter 
All I have to test it with is a dell 250W ps. that only has a 20 pin power instead of a 24 pin power. Would that be a good test?
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post #5 of 21
Quote:
Originally Posted by sc30317 View Post
All I have to test it with is a dell 250W ps. that only has a 20 pin power instead of a 24 pin power. Would that be a good test?
It's certainly better than nothing
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post #6 of 21
Thread Starter 
well I tried it. It did the same thing. Could that be because it didnt have all 24 pins, or is it the mobo for sure?
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post #7 of 21
Thread Starter 
Is it most likely the mobo or the PS?
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post #8 of 21
i'm surprised you didn't blow your board. the dell psu uses a propriety wiring setup that is different form the atx standard. i think your psu is done. you should find a new psu.
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post #9 of 21
Thread Starter 
Got a 400W PS from a friend- tried it. Same result. Has to be a borked MOBO, right?
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post #10 of 21
Thread Starter 
Anyone? Please confirm this for me....
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