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Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

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Apple Hardware Test code 4SNS/1/C0000008: TN1D- -124

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i ran an Apple Hardware Test because

  1. The MacBook turns off without the magsafe
  2. The battery status LEDs do not indicate anything
  3. I have tried 2 batteries but the problem still occurred

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4SNS/1/C0000008: TN1D - MCP89U - Internal of the chip die. This is the combined NVIDIA GPU/PCH chip.

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Here’s a map view of the thermal sensors

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Sadly, this is not really repairable as the chip will need to be replaced and unless you have the correct tools its just not possible. Time for a new logic board MacBook Pro 13" Unibody Mid 2010 Logic Board Replacement and here are your choices:

MacBook Pro 13" Unibody (Mid 2010) 2.4 GHz Logic Board Image

Product

MacBook Pro 13" Unibody (Mid 2010) 2.4 GHz Logic Board

$209.99

MacBook Pro 13" Unibody (Mid 2010) 2.66 GHz Logic Board Image

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MacBook Pro 13" Unibody (Mid 2010) 2.66 GHz Logic Board

$249.99

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2 Comments:

@danj yes, i suspected it had something to do with the logic board and just to confirm, i have added a screenshot of MacsFanControl. it does not show GPU temperature at all.

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The GPU is part of this chip that has failed.

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