MacBook A1342 (820-2567-A) MagSafe Issues

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  • Rammer$6
    New Member
    • Jun 2017
    • 3
    • Canada
    #1

    MacBook A1342 (820-2567-A) MagSafe Issues

    Hello All

    I am troubleshooting a MacBook (2009) A1342 with logic board 820-2567-A.

    When the charger is connected, there is no green light (or light) on the connector.

    I have confirmed the charger is working properly, and the DC in board is also working properly.

    When I check for voltage on the 18.5 v supply line I only get 0.5 v. It appears that when the power is switched on there is a momentary increase in voltage which then settles out back to 0.5 v. As a result it appears there is no power to any of the circuits on the board.

    I thought there might be some kind of "inrush" limiting circuit that is telling the adapter to not output voltage but I could not find anything like this on the schematic.

    I would appreciate any suggestions as I am stumped at this point.

    Thanks!
    Tags: None
    • ala_borbe
      aka Donald
      • Apr 2011
      • 1625
      • Malta
      #2
      Re: MacBook A1342 (820-2567-A) MagSafe Issues

      check on wire circuit

      on youtube search for louis rossmann he has few videos on this
      Im Back... sort of...

        Comment

        • Rammer$6
          New Member
          • Jun 2017
          • 3
          • Canada
          #3
          Re: MacBook A1342 (820-2567-A) MagSafe Issues

          Thanks!

            Comment

            • dellxps15
              Badcaps Legend
              • Feb 2014
              • 1598
              • italy
              #4
              Re: MacBook A1342 (820-2567-A) MagSafe Issues

              check u6900 u6901 voltages and report back

                Comment

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