MBPro 13 Logic Board A1278 doesn't charge the battery

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  • DjErase
    New Member
    • Jun 2012
    • 1
    • Belgium
    #1

    MBPro 13 Logic Board A1278 doesn't charge the battery

    Hi all,

    I just buy a MBP 13 on ebay for my kid (MBPro 13 2.4 GHz Logic Board P8600 820-2879-B A1278, EMC:2351).
    He is in perfect condition but the battery doesn't charge.
    Magsafe led is always green. I buy a new battery on ebay but it's the same. When I removed magsafe it automatically turns off.

    On the motherboard pins near the battery connector, I have 11,55 volts between pin 1,2,3 & 7,8,9 and 3,41 between 1 and 4 or 1 and 6 (with battery and with or without magsafe plugged in). I also have 3,41 on G3h.

    The magsafe is working fine on another MBP.


    I read a lot on this forum but I'm lost because of too lot information.

    Is someone can help me ?

    Thanks for any info.

    Regards
    Tags: None
    • b700029
      Banned
      • Sep 2010
      • 640
      #2
      Re: MBPro 13 Logic Board A1278 doesn't charge the battery

      First, the schematic.

      When you boot into the OS, does it detect the battery? If it does, you may want to check Q7055 (SI7137DP) which should be somewhere near the battery connector --- just follow the trace.

      I don't know what you mean by "I also have 3,41 on G3h".

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