820-2850 a1286 MacBook Pro No Keyboard/trackpad

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  • crazeej
    Member
    • Jan 2019
    • 32
    • germany
    #1

    820-2850 a1286 MacBook Pro No Keyboard/trackpad

    Hello Guys, i have this uncommon fail of trackpad and Keyboard where:
    No Keyboard and trackpad in OS -> USB Mouse works fine!
    At Startup Press Option Key -> No Reaction!

    I noticed If i Close the Screen - Screen wont Turn Off!

    Measured around Keyboard 3v3s3 there. Pp3v42 there and smc on Off ist 3.42....

    Smc issue maybe?
    Where ist z2_boost_en coming from? OK trackpad, but which Signal activate the en Signal in the trackpad? So lost on this... Maybe eine non certified Tech can give me a hint?


    U5805:
    Pp18v5S3 0v
    Z2_boost_en 0-20mv
    Smc_lid 3.42
    Button disable : 0v pretty Sure measured a Lot of stuff.

    Thx a Lot.
    Last edited by crazeej; 02-20-2020, 01:08 AM.
    Tags: None
    • crazeej
      Member
      • Jan 2019
      • 32
      • germany
      #2
      Re: 820-2850 a1286 MacBook Pro No Keyboard/trackpad

      Nothing? Nobody Had this issue?

        Comment

        • Pedro147
          Senior Member
          • Sep 2016
          • 157
          • Australia
          #3
          Re: 820-2850 a1286 MacBook Pro No Keyboard/trackpad

          Maybe try external; wired keyboard ? Good luck with the rest, I am on my learner plates
          Last edited by Pedro147; 02-25-2020, 08:16 PM.
          My YouTube channel - https://www.youtube.com/channel/UCiD...5d6OgizDqoi_SA

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