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hp pavilion 310n won't power up

Scott C
Scott C asked
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Last Modified: 2007-12-19
I am working on an hp pavilion 310n that won't turn on at all.

When I plug in the power supply the green LED next to the fan briefly lights up then dims out.

There is no activity when it is plugged in and the power button is pressed.

I tried shorting out the green wire with one of the black wires and plugging in the PS but the same thing happens.

The LED lights up then dims out.  The fan on the PS won't spin at all and no sound is coming out of it.

This looks like to me the PS is shot.  I just need to confirm this with somebody...preferably someone who is familiar with this make and model.

Thanks!!!!
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Commented:
Just connect another power supply and see if it boots.  Even though it uses a smaller form factor power supply, a standard ATX power supply can be used for testing.  Only need to connect ATX motherboard connector to boot.
Commented:
If memory serves me, this is correct replacement power supply:

http://www.directron.com/ps320ma.html

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Distinguished Expert 2019

Commented:
well - you can be right of couse, bad power supply.
But try first to strip down the pc to the bare minimum, and see if it boots up
Connect only mobo + cpu + 1 ram stick, video card, power supply - if this is ok, add devices one by one till the bad one is found.
Scott CSenior Engineer
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Commented:
Thanks willcomp!!!

I did have an extra ATX laying around and as soon as I hooked it up the computer powered up.

The extra points are for going above and beyond in giving me a link for a new PS.

Much appreciated!!!
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