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Replace heatsink fan on CPU.

Heat sink and fan seem to be in good shape, but one plastic catch, holding fan and heat sink to CPU, is broken. When I released the remaining 3 catches, I discovered some kind of paste between the CPU and the aluminum heat sink. I am guessing this is heat sink paste. My question is: Do I need to replace this old "paste", or just add some more. If the old paste needs to be removed, can I safely scrape it from the CPU and heat sink with a razor blade or should I use some kind of solvent.

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  • Lazyken Sep 16, 2008

    SFroese, thanks, I certainly appreciate the information. I am headed for the nearest Radio Shack. Lazyken


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The thermal paste should be cleaned off. Clean the CPU and heatsink fan with a dry cloth, which should remove the paste quite well. It is simply a viscous liquid and should not require scraping.

You should replace the thermal paste when installing the new fan. You can purchase it at your local computer supply store. Simply place a small dab of it on top of the CPU and then install the fan.

If you try to re-use the existing thermal paste, you will not get reliable heat transfer from the CPU to the fins.

Posted on Sep 11, 2008

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