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2007 iMac GPU Repair

Discussion in 'Apple IMac' started by btmail, Mar 31, 2017.

  1. btmail

    btmail New Member

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    I have an old white 24" intel iMac and it started getting a lot of artifacts on the screen. Last week I put new thermal paste on the GPU and CPU. While it is running significantly better, it's not completely fixed. Have any of you had success baking the GPU? Seem like mixed opinions from what I have read so far.
     
  2. turner brown

    turner brown VIP Member VIP Member

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    I would try a copper shim between chip and heat sink
     
  3. nara

    nara Who? VIP Member

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    I had the same problem with an iMac a few years ago. New thermal paste only worked for a short time but the problem returned. The only solution that seemed to work was to download a program(I've forgotten which one) which allowed me to increase the fan speed. It ran a little noisier, but it worked.
     
  4. btmail

    btmail New Member

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    Thank you for the suggestion. I'll need to read a bit more about that as I've never used a copper shim before.
     
  5. btmail

    btmail New Member

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    I've been using the fan program, and while it does help somewhat the issue still remains unfortunately. Thank you for the suggestion.
     
  6. turner brown

    turner brown VIP Member VIP Member

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    also replace fan as bearings will be worn and slowing the fan down
     
  7. btmail

    btmail New Member

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    I'll give that a shot. Probably not the best idea to keep throwing money into this old iMac haha, but it has been a great workhorse for the last 10 years.
     

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