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Original post by: Reece ,


This is most likely an issue with C7771 on the logic board, on the 1.05V line required to startup. This tantalum capacitor commonly goes bad on the 2008 15" models, which can make it completely dead, turn off during usage, or not pass POST and chime.

If you have experience microsoldering, I can guide you on how to do this. If you have not got experience, I would recommend sending it to someone who is aware of this issue and have the tools/experience required :)