Macbook a1706, dead keyboard.

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  • saronno
    Senior Member
    • Jan 2012
    • 57

    #1

    Macbook a1706, dead keyboard.

    Anyone has experience troubleshooting keyboard on this model?
    From schematics it seems an i2c keyboard, the problem is I can't find a good test point con scl and sda, in order to see if voltage is present (usually i2c works with the 2 rail pulled up with a resistor to a voltage source ... components attached to the two rail communicate pulling the line down.
  • mon2
    Badcaps Legend
    • Dec 2019
    • 13838
    • Canada

    #2
    Review the cabling. Is the trackpad working? Fan spin is normal or high?

    Comment

    • saronno
      Senior Member
      • Jan 2012
      • 57

      #3
      trackpad is working fine. So, my guess is pull up voltage to be present since they seems to be on the same i2c chain. Am I right?
      Cabling seems good, at least before removing the logic board .... maybe tomorrow I will remove the board and check on the other side.

      Comment

      • saronno
        Senior Member
        • Jan 2012
        • 57

        #4
        it's trackpad/keyboard replaceable right away? I mean, can emerge anyproblem with ID of trackpad/keyboard? Are they combine by ID? TY

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13838
          • Canada

          #5
          Yes. A1706 does not have such ID locks. Each part is replaceable. You should test with another known good keyboard/trackpad and cabling. View YT videos on this topic.

          Comment

          • saronno
            Senior Member
            • Jan 2012
            • 57

            #6
            Thanks.

            Comment

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