MacBook Pro A1989 820-00850-A not powering on

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  • dbuergi
    Senior Member
    • Jul 2024
    • 123
    • Deutschland
    #21
    Problem solved. The area around R7050 also showed some serious gunk (this part of the board was mentioned in repair wiki). I cleaned everything, looked for corrosion and measured again without finding any problem.
    The board turned from 5v to 20v and the battery is also charging again. But i think it's impossible to tell if a single component made this fault.

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