Apple macbook Air 13" A1466 - No power on - No green led

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  • Eleways
    Senior Member
    • Oct 2014
    • 62
    • Italy
    #1

    Apple macbook Air 13" A1466 - No power on - No green led

    Hi

    I've some Macbook Air A1466 with Board 820-3437-b. No power on and the magsafe have no green light. It's no problem about resistor 4,7.
    3.3 Volt is present.

    Any suggestion?

    Thanks and best regards.

    Luke
    Tags: None
    • Eleways
      Senior Member
      • Oct 2014
      • 62
      • Italy
      #2
      Re: Apple macbook Air 13" A1466 - No power on - No green led

      I can add that 5 volt is missing.

      On U7501 i can find a Vin about 8Volt.

        Comment

        • piernov
          Super Moderator
          • Jan 2016
          • 4435
          • France
          #3
          Re: Apple macbook Air 13" A1466 - No power on - No green led

          Known good DC-in Board?
          Voltage on SMC_RESET_L?
          Exact voltage on PPBUS_G3H?
          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

            Comment

            • Eleways
              Senior Member
              • Oct 2014
              • 62
              • Italy
              #4
              Re: Apple macbook Air 13" A1466 - No power on - No green led

              SMC_RESET_L 3,3v
              PPBUS_G3H 8,20 v

                Comment

                • piernov
                  Super Moderator
                  • Jan 2016
                  • 4435
                  • France
                  #5
                  Re: Apple macbook Air 13" A1466 - No power on - No green led

                  Voltage on PP3V3_S5_SMC_VDDA?
                  SMC is not running. Liquid damage near SMC?
                  OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                    Comment

                    • Eleways
                      Senior Member
                      • Oct 2014
                      • 62
                      • Italy
                      #6
                      Re: Apple macbook Air 13" A1466 - No power on - No green led

                      PP3V3_S5_SMC_VDDA 3,3 v

                      No liquid damage.

                        Comment

                        • piernov
                          Super Moderator
                          • Jan 2016
                          • 4435
                          • France
                          #7
                          Re: Apple macbook Air 13" A1466 - No power on - No green led

                          Probably dead SMC anyway.
                          OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                            Comment

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