cpu stuck to Heat sink and fan

Discussion in 'Hardware' started by PC pro, Feb 16, 2007.

  1. PC pro

    PC pro Private E-2

    i have a AMD 64 X2 4200+ 2.2GHz

    but when i went to remove the Heat sink and fan from the motherboard
    the CPU came with it and is stuck to the heat sink and fan
    the heat sink and fan is the one that came with the CPU
    a AMD heat sink and fan

    i belive it had a thearmal pad instead of thearmal paste
    and suggestion for removing or getting the CPU unstuck?

    next time sould i not use the defult thearmal paste or PADS
    and clean it off!!!

    i have some Zalman thearmal paste sould i use that?
     
  2. baklogic

    baklogic The Tinkerer

    I would suggest you try to twist the cpu, carefully.
     
  3. Rikky

    Rikky Wile E. Coyote - One of a kind

    I concur dont pull at all just twist:)
     
  4. PC pro

    PC pro Private E-2

    i managed to free it carefully using a bottle opener
    the like general device for opening platic bottal tops or the like
    jam jars openers that also can be used to open pepsi bottles

    like this one

    http://www.amazon.com/Pepsi-Cola-Liter-Bottle-67-6/dp/B000328VP6

    so the bottle opener was a usefull tool and free'ed my CPU from my Heat sink and fan so i can add a bottle opener to my PC tool kit!!!?

    and use Zalman thearmal paste to reapply the thearmal meteral to the CPU
    in a hope it don't stick the CPU to the heat sink and fan!!!

    EDIT: i have Zalman thermal Grease and not Zalman thermal paste

    whats the differance beteen thermal paste and grease?
     
  5. walter34payton2002

    walter34payton2002 Specialist

    Same thing, different name. Here is a word of caution. Thermal pads are pretty bad and do a number to the heat spreader and HSF. They are made with parffin wax that melts when the processor heats and fills the valleys of the HSF and heat spreader. Removing it completely is nearly impossible. That is a problem because if you try to apply a new interface material, such as Arctic Silver, it makes it so that the AS can't fully contact the bare metal, making it less useful. Try to get your mating contacts very clean (high purity isopropyl alcohol, or other stronger cleaner) before applying thermal grease and mounting HSF. Anytime you see a thermal pad, replace it with better quality thermal interface material BEFORE using it because once used the heat will cause the wax to melt, making it near impossible to get it all from the microscopic valleys of the metal.
     
  6. PC pro

    PC pro Private E-2

    i used lighter fuid and a tisue whitch has clean off the thermal pad from both
    the CPU and heat sink and fan.
     
  7. walter34payton2002

    walter34payton2002 Specialist

    Probably not the best choice, but be very careful with it. Also, follow that up with a cleaning with high purity isopropyl alcohol. The reason why is that the lighter fluid you used may have a residue of its own that it leaves causing the same problem as the wax. You want a very clean surface. I think once you use the alcohol, then make sure it is dry and free of debris and hook it all up. When applying the thermal interface don't use too much. A grain of rice size in the center of the CPU heat spreader will do (for dual core CPU's use a narrow line through both cores) then let the HSF squish it into place when you set it.
     
  8. ASUS

    ASUS MajorGeek

    It's common problem where the CPU sticks to the HS when removed.
    It's best to run the PC fo few minutes to build up some heat (or even use something like a Hair dryer or heat gun) then when removing HS use some twisting motion to help release the HS from the CPU without poping it out of the CPU socket.

    It does not matter what type of thermal material is used the all can make a good bond especially when cold

    Artic Silver or Artic Ceramique both make great bond & when trying to remove the CPU both create suction, so it's best to be careful

    Check to make sure you didn't bend any cpu pins

    The best way to clean Thermal material from HS or CPU chip is scrap with plastic like Drivers License or Credit card then clean with Isopropyl Alcohol, I only use 91% or higher

    I would always use good Quality Thermal paste like AS5 or AS Ceramique:major

    Don't use a can opener only a Moron would :neener
    Heat & Twisting motion , it doesn't take a Rocket Scientist
     
  9. baklogic

    baklogic The Tinkerer

    Yes,I agree, I thought that bottle opener a bit dodgy.
     
  10. HawkeSHR

    HawkeSHR Private E-2

    I just experienced this same thing. I was cleaning the dust out of the inside and ended up breaking a few fan blades. When I was trying to replace the fan (easier to just replace the whole fan/heat sink unit), I pulled the processor out of the socket (AMD Athlon 64 3700 from Socket 754).

    The processor was stuck to the old heat sink.

    After reading all these posts I decided to use a small ceramic heater and set it for about 65-68 degrees with the fan on. I put the heat sink/attached processor about 3 inches from it and rotated it several times over about 10 minutes. I was able to pry away the processor from the heat sink.

    The one post suggesting to power up the unit first before removing it is a great idea, but I had already powered down and had the cabinet open. Thank God I was able to fix this problem.

    Thanks for your help.

    Respects to all.
     
  11. Creativeballance

    Creativeballance Private First Class

    Thermal Pad? Is that what comes on the processor heatsink out of the box?
     
  12. Wyatt_Earp

    Wyatt_Earp MajorGeek

    It depends on the CPU/heatsink. Sometimes they come with thermal pads, sometimes thermal grease. The few AMD processors I have purchased lately (last 3-5 yrs) have all had thermal grease.
     
  13. HawkeSHR

    HawkeSHR Private E-2

    Just replaced my heatsink/fan and the kit came with thermal grease, which I believe is better. If you buy a heatsink fan kit just make sure the thermal grease packet is inside the box before you purchase it.

    I realize you did not ask for this info in your question but here it is anyway:

    Unit I purchased is working like a champ:
    Thermaltake CL-P0296 From Radio Shack (http://www.radioshack.com - Cat. #28-1009, $36.00), very quiet.

    Cleaning processor and replacing heatsink/fan:
    Easy to clean off the old grease as noted in previous posts from others. I only had 70% isopropyl alcohol and Qtips (used several and discarded them once soiled enough) but it worked fine removing the old grease from the processor. I used a card edge (stiff bond paper like a business card) to apply it evenly on the processor and it worked fine. Just be careful not to get any grease on any of the processor pins.

    Popped it back in Socket 754 and after checking the instructions, installed the new heatsink/fan, clipped into place. All working fine.

    Regards.
     

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