Still getting high temps after repasting processor

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  1.    #1

    Still getting high temps after repasting processor


    This is a Compaq Presario CQ60-215Dx laptop which was badly overheating. I repasted the Athlon processor but am still getting 90c CPU temp readings with CoreTemp.

    I noticed there were two other chips having their heat dissipated by heat sink, one an Nvidia display chip and not sure about the other. But these were using a foam pad on heat sink and not paste. The pads were in good enough condition I left them although thought about using paste. I don't think they're responsible for high temps because these are dual core CPU readings.

    Any suggestions of what to look at. The CPU fan is blowing very hot air.
    Last edited by gregrocker; 14 Jul 2012 at 10:57.
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  2. Posts : 2,072
    Windows 7 x64 Professional SP1
       #2

    Just to clarify Greg.

    90C at load, or 90C at idle?

    The thermal pads should be sufficient for the NVIDIA chipset as it's an integrated NVIDIA 8200 card that's not a heat monster.
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  3. Posts : 50,642
    Thread Starter
       #3

    I was only watching streaming cable news on it while monitoring the 90c temp. So I guess that's a load. The news certainly was.
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  4. Posts : 6,330
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
       #4

    You say the CPU fan is blowing hot air.
    Does that mean you can run the laptop disassembled enough that you can see the CPU fan running?
    Or do you feel heat coming out of the vent and maybe it's an exhaust fan pushing the air out?
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  5. Posts : 7,466
    Windows 10 Home Premium 64bit sp1
       #5

    New paste should equal better temps

    I would change the fan to a more quality one

    That has happened to me in the passed few days I couldn't get stable temps

    My fans weren't up to par anymore and that sounds like a good indication


    Im sure you did all the dusting and cleaning that would be the only issue unless something is creating heat check your board out to see if there is some heat stressed area's

    I know when my capacitors blew it got really hot then pop shut down
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  6. Posts : 50,642
    Thread Starter
       #6

    Thanks guys. I feel a hot breeze coming out of the CPU fan's exhaust port, which is the only fan I saw when disassembled. I could not test it then to see if it worked. But it seems it's working as there is an unmistakeable flow of hot air from the port. Could it be otherwise faulty?

    This is the unit as best as I can tell tho it doesn't specify 225DX model of the CQ60: http://compare.ebay.com/like/1807805...Types&var=sbar

    I also found this which makes me think I should have dissassembled the heatsink from fan to clean it. I also did not follow his advice to paste the GPU and another chip which have legs on the heatsink but which are cooled using foam pads - these were still in good shape. http://augustapcrepair.wordpress.com...erheat-repair/
      My Computer


  7. Posts : 7,466
    Windows 10 Home Premium 64bit sp1
       #7

    Exhausting both you say ?

    is the GPU putting any heat out ?

    I don't know if that is standard or not to include both of those on the same path of exhaust

    CPU/GPU that is

    did you try the old putting a fan in other vent and pushing more air through the other side to see if there is a actual decrease used to do that ith a desktop when they get wicked hot

    The picture of the Fan and Cpu looks like a VGA fan and I think you should have cleaned the heatsink too the heatsink on the picture looked like a cat got into it all kinds of lint and dust
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  8. Posts : 2,072
    Windows 7 x64 Professional SP1
       #8

    gregrocker said:
    I also found this which makes me think I should have dissassembled the heatsink from fan to clean it. I also did not follow his advice to paste the GPU and another chip which have legs on the heatsink but which are cooled using foam pads - these were still in good shape. Compaq Presario CQ60-215DX Overheat Repair « Computer Repair Augusta GA – Lightspeeds PC
    If you wanted to paste the GPU and that other chip you'd have to remove the Thermal foam pads and replace them with copper shims of similar thickness and dimensions to help dissipate heat better.
      My Computer


  9. Posts : 50,642
    Thread Starter
       #9

    I really don't since he refers to possibly shorting it, the pads look good, and temps I'm reading are from CPU anyway. Does this sound right?

    Right now I think I agree what I missed is taking the fan off the heatsink to clean out the gunk shown in Compaq Presario CQ60-215DX Overheat Repair « Computer Repair Augusta GA – Lightspeeds PC. Is there a way to test the fan when I do this? Or just replace it?


    Compaq CQ60-215DX Fan



    Fan Removed From Heatsink >>>>
    Still wondering why your laptop feels very hot, and is shutting down? Yes, that is dust, hair and what ever else. At one time, the laptop pulled air into through the laptops cool air intake vent, and is suppose to exhaust the laptops internal heat out of the laptop. Not happening anymore with this Compaq CQ-215DX laptop, with what you see here.
      My Computer


  10. Posts : 6,330
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
       #10

    One thing you could check is to make sure you put enough paste on the processor.
    If you remove it you should be able to see that the paste did spread correctly.
    If a "large area" has no paste, you may need to use a little more.
      My Computer


 
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