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  1. C

    820-4924 Powers Up But No Chime or Display

    Ok this one has gotten me completely stumped. Initially the macbook came in with water damage and the keyboard wasnt working. Opened it up and found Pin 4 of J4813 was burned away also some corrosion around Q7520. Replaced J4813 and cleaned up the area around Q7520 - turned on got to the boot...
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