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Removing the heatsink

This is a discussion on Removing the heatsink within the Motherboards, Bios|UEFI & CPU forums, part of the Tech Support Forum category. How is this done? I've an old comp with a Cool Blaster heatsink, the MO is marked CUW-AM. It's an


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Old 02-05-2010, 09:35 PM   #1
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How is this done? I've an old comp with a Cool Blaster heatsink, the MO is marked CUW-AM. It's an old HP computer. I've had this off before for goop check. I am sure it needs a fresh application.. but the heatsink will not budge.

It has two metal tines on the right and left. The right one will depress but all that happens is that the heatsink will now slide a bit. The left is tight against the heatsink.I've tried this warm and cold, same thing happens.

Is there a trick to it? Need info? A picture? I don't want to break it but I don't know how to get it off.
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Old 02-05-2010, 10:09 PM   #2
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Is your computer OEM? if so, you can post the model number.

If it's not, what socket does the motherboard use? if you're not sure, you can give us the name of the processor. Each socket has its own trick to take the HSF off.
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Old 02-06-2010, 03:22 AM   #3
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Normally, after they are warm you can grasp those (be sure to ground yourself and have it unplugged) with your fingers on each side of the CPU and begin to twist side to side as you pull up and they will come right off. Just don't pull hard enough to pull the CPU out of the socket.
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Old 02-06-2010, 12:05 PM   #4
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The case is marked HP Pavilion 7850. The MB and processor are original equipment. According to Belerac Advisor the main board is an Asus CUW-AM/MEW-AM 2.06. Not sure about socket. The processor is a 933 megahertz Intel Pentium III.

Tumbleweed36, I've tried that. I'm scared to pull any harder.
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Old 02-06-2010, 03:44 PM   #5
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Do you have the securing latches removed?



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Old 02-06-2010, 04:28 PM   #6
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No, if they are those two metal tines. I don't know how to get them off.
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Old 02-06-2010, 04:34 PM   #7
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Those have to be unsecured first before you try to remove the heatsink/CPU.
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Old 02-09-2010, 02:04 PM   #8
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Then that is my issue. How are they removed..?? Squeezing, pushing and pulling do not work. There has got to be a trick to this..
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Old 02-09-2010, 02:12 PM   #9
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they are generally snap on, try "gently" moving them and lightly prying them out side ways, or they may be pop in's ?

once you have the clips free

then heat the cpu and heatsink with a blow dryer on med heat for several minutes to loosen the thermal paste or pad otherwise you will have to exert more pressure then the cpu may enjoy

when removing the heatsink lift ever so gently and turn the heat sink clockwise and counter clockwise about an 1/8 of an inch at a time to break the bond. you will feel the heatsink bond give up when its ready to be removed
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Old 02-09-2010, 02:12 PM   #10
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Quote:
Originally Posted by katsrevenge View Post
Then that is my issue. How are they removed..?? Squeezing, pushing and pulling do not work. There has got to be a trick to this..

can you give us an upclose digital pic of your heatsink ?
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Old 02-18-2010, 06:09 PM   #11
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Sure thing... The camera battery is charging. I'll take a few as soon as it finishes.
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Old 02-21-2010, 04:27 PM   #12
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Alrighty. I've good clear pictures. I'm willing to be laughed at as I'm assuming this is something so obvious it is not even funny.

Thumbnails, click for bigger.. and they get huge if you zoom in.

Overview of the culprit. Note: that blue-grey is the top of the case.


Right side. Metal thingy.


Left Side.


Link to all three if these don't work.
https://img168.imageshack.us/g/cimg0177.jpg/

Hope these help! I couldn't really get too much tighter in there... tight fit in that case.
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Old 02-21-2010, 06:20 PM   #13
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the answer lies with the middle picture & Metal thingy

see if you can use a small blade screw driver to "gently" pry the clip sideways or open

dont use enough force to remove the hook bend in that clip though

just wiggle it and analyse it as you are working on it
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Old 02-21-2010, 06:21 PM   #14
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most likley you will have to push down on the metal thingy and pry outwards too
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