mac book a1278 820-2936-b

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  • nusilor
    Member
    • Jan 2019
    • 23
    • aus
    #1

    mac book a1278 820-2936-b

    so i have not image on screen laptop screen but image on dp
    PP3V3_LCDVDD_SW missing
    PP3V3_S5 present
    LCD_IG_PWR_EN 0 v
    watched a few of louis rossmann saying check gpu vcore. however it seem to me that the image comes from the mpch, and there is no gpu
    i have image on dp
    dose not appear to go through the mux
    is this an issue with the mcph or am i missing something
    Tags: None
    • ktmmotocross
      Boardkiller
      • Feb 2014
      • 3581
      • slovakia
      #2
      Re: mac book a1278 820-2936-b

      check lid sw

        Comment

        • nusilor
          Member
          • Jan 2019
          • 23
          • aus
          #3
          Re: mac book a1278 820-2936-b

          cheers, ill check the circuit the cable is disconnected. didnt think about that

            Comment

            • nusilor
              Member
              • Jan 2019
              • 23
              • aus
              #4
              Re: mac book a1278 820-2936-b

              unfortunately not SMC_LID 3.4v trace looks fine going to smc

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