MACBOOK A1534 no pwer

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  • nassih
    Badcaps Veteran
    • Oct 2015
    • 276
    • morocco

    #1

    MACBOOK A1534 no pwer

    hi everybody
    i have in my shop a macbook a1534 2016 with symptom not charging no power
    after open it i have found a liquid around U7100 but no short
    i have measured and check different blocks no issue.
    some voltages:
    CHGR_phase2=8.9v
    P2V7 nand_R= 2.7v
    PPVCCIO_S0= 0.85v
    P1V2V_S3= 1.2v
    PPVCORE_SUS_PCH= 1v
    PP1V_SUS= 1v
    pp3v3_S5 = 3.3v
    PP5v_S4 =5v
    tanks!
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: MACBOOK A1534 no pwer

    With these measurements the machine is turning on, so not sure what you mean by "no power". Could be the usual dead CPU.


    Edit: my bad, missed the year, it's an 820-00244 board.
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

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    • nassih
      Badcaps Veteran
      • Oct 2015
      • 276
      • morocco

      #3
      Re: MACBOOK A1534 no pwer

      tanks bro
      yes its power on but no chime no display and no backlight.
      the cpu is a bit cold,i think other voltage is missing.
      ppvcore_so_cpu_ph1 =0v
      ppvcore_so_cpu_ph2=0v
      ppvccgt_so_cpu_ph1=0v
      ppvccgt_so_cpu_ph2=0v

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      • nassih
        Badcaps Veteran
        • Oct 2015
        • 276
        • morocco

        #4
        Re: MACBOOK A1534 no pwer

        problem resolved after cheeking water damage parts around U7100 i have found a missing line ppbus_s5_hs_computing_isns the Resistance R7101 have no contact due a water damage.
        now i have other problem the machine not sleeping when closing lid pleas bro where Lid Sensor is located.

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