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NO Video and broken heatsink on Motherboard

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#1 JayinPA


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Posted 01 August 2009 - 03:54 PM

I can not get any video! I opened the case and first thing I saw was a small aluminum

heatsink resting againg against the AGP video card. A wire runs through the middle of the

heatsink and acts as a spring which is supposed to be held onto the mainboard by what looks

like circuit jumpers with a hoop on top. One of the clips was also missing, but I found it

laying on the motherboard. Question, should I assume heatsink shorted video card? Can i just re-glue

the heatsink back on the motherboard? Motherboard is marked PV50-VX in a Sony desktop pc.

Thanks for any advice!

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#2 fairjoeblue


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Posted 01 August 2009 - 04:22 PM

The heatsink goes on the Northbridge Chipset.
Without it the chipset over heats.
If one of the little U's came off of the motherboard you need to find it & remove it from the case so it doesn't short anything out.
The easiest way to fix it is with double sided thermal tape ,


Unplug the computer
Wait a minute & clean the chipset with a piece of paper towel & rubbing alcohol
Clean the heat sink also
Cut a piece of the tape to just fit the heatsink
Put it on the heatink & then stick the heatsink on the chipset.
Just let the wire part just hang out, don't try using it !
Provided the chipset wasn't damaged it's good to go.

I keep a supply of the double sided thermal tape for just such repairs.
It also works on video card coolers as long as they aren't real heavy !

NEVER use thermal tape to on a CPU heatsink !

The other way of fixing it is to try & epoxy the U back on.
Messy & usually doesn;t work out well .

Edited by fairjoeblue, 01 August 2009 - 04:25 PM.

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