Apple Macbook A1342: Missing component in schematics 820-2877-B

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  • DaniLecx
    New Member
    • Jan 2019
    • 2
    • Belgique

    #1

    Apple Macbook A1342: Missing component in schematics 820-2877-B

    My Macbook A1342 doesn't recognise the battery anymore.
    There is a component missing on the board (over pin 8 of the battery connector) but i can't find it on the boardview.
    Any help on how i can solve this?




    Last edited by DaniLecx; 01-03-2019, 10:50 AM.
  • BlueMidnight
    Badcaps Veteran
    • Jan 2015
    • 489
    • United States

    #2
    Re: Apple Macbook A1342: Missing component in schematics 820-2877-B

    You appear to have the 820-2877 and not the 820-2877-B.

    Schematic and boardview available in this post.

    And the part is C6960, which is a 1uF 25V 0603 X5R capacitor.

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    • pokyss1
      Senior Member
      • Mar 2019
      • 57
      • Canada

      #3
      Re: Apple Macbook A1342: Missing component in schematics 820-2877-B

      hello i have a problem with the a1342 motherboard 820 2877-b it misses the P3V42G3H_BOOST even i have change the U6990 LT3470A hello the same problem

      Comment

      • piernov
        Super Moderator
        • Jan 2016
        • 4435
        • France

        #4
        Re: Apple Macbook A1342: Missing component in schematics 820-2877-B

        If it's working on battery then U6990 is not your issue.
        Check voltage on PP3V42_G3H and PPBUS_G3H with charger plugged in and battery unplugged. Make sure you have a green light on the Magsafe.
        OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • fallen777
          New Member
          • Jan 2021
          • 7
          • Mexico

          #5
          Re: Apple Macbook A1342: Missing component in schematics 820-2877-B

          Hey can anyone figure out the schematics for a1342 820-2883-a 2.26ghz board
          Want to know what is gonna be the damage for shorting these lines

          C6001
          Pin 1 PP5V_S3_DEBUG_ADC_AVDD_FILT
          Pin 2 GND

          C6005
          Pin 1 ADC_REFCOMP
          Pin 2 GND

          D6950
          Pin 1 SMBUS_SMC_BSA_SCL
          Pin 2 SMBUS_SMC_BSA_SDA

          R6050
          Pin 1 ISNS_ODD_P
          R6051
          Pin 2 ISNS_ODD_N

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