Macbook A1708 - 820-00840 5v only

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  • obelix24
    Badcaps Veteran
    • Jun 2023
    • 291
    • Slovakia
    #1

    Macbook A1708 - 820-00840 5v only

    Hello All,

    I've another board 820-00840 that was not turning was on 5V only.

    I've replaced U7000 and CD3215's and now the board takes 20V.

    I've put the board in the housing and there is chime when I connect charger and also apple logo appears but charger stays on 20V 0.05 - 0.08a it doesn't go higher and after few second it turns off (there is only apple logo and the bar goes to approx 1/3.

    does anyone know what is here happening ?

    I just noticed as I left the MacBook on charger (lid closed) when I've opened lid there was login screen, but after second or two it goes black.
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14001
      • Canada
      #2
      Re: Macbook A1708 - 820-00840 5v only

      Did the display go dark due to backlight failure or did the display go off from a movement of the display angle? If angle = flexgate.

      Apply a flashlight / torch / roman candle to the front side to see if the graphics are still present after this event.

        Comment

        • obelix24
          Badcaps Veteran
          • Jun 2023
          • 291
          • Slovakia
          #3
          Re: Macbook A1708 - 820-00840 5v only

          Ok now the macbook stays on and i was able to get to logom screen and also recovery options but the charger still stays on 20v 0.05a
          But it's showing it's charging (thunder icon in battery). I will let it on charger few hours to see if the batery is bad

            Comment

            • obelix24
              Badcaps Veteran
              • Jun 2023
              • 291
              • Slovakia
              #4
              Re: Macbook A1708 - 820-00840 5v only

              Ok i left it on charger and it looks like everything is ok. Charges ok

                Comment

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