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Macbook Pro 15" - A1990 - Chime and keep restarting

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    Macbook Pro 15" - A1990 - Chime and keep restarting

    Hi there,
    I have a MacBook pro A1990 was water damaged. I cleaned and reflow damaged components now I have 20V and MacBook turning on but keep restarting after chime.
    I have changed battery but still same problem.
    Anyone can help me?

    #2
    Re: Macbook Pro 15" - A1990 - Chime and keep restarting

    Try a PRAM / SMC reset.

    Comment


      #3
      Re: Macbook Pro 15" - A1990 - Chime and keep restarting

      tried but same problem

      Comment


        #4
        Re: Macbook Pro 15" - A1990 - Chime and keep restarting

        Do you see the backlight? Apple boot logo?

        Could the OS be corrupt?

        Can you try to boot from an USB thumb drive?

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          #5
          Re: Macbook Pro 15" - A1990 - Chime and keep restarting

          Yeah I do have apple logo chime and it restart again

          Comment


            #6
            Re: Macbook Pro 15" - A1990 - Chime and keep restarting

            Try T2 restore; have seen some of these that boot-loop when T2 gets corrupted.

            Comment


              #7
              Re: Macbook Pro 15" - A1990 - Chime and keep restarting

              Have the same issue, did a T2 restore on one, no water damage. Keeps restarting won’t load unless booting into safe mode. Any ideas?
              sigpic
              MEOWING IN THE IMPOSSIBLE UNIVERSE!

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                #8
                Re: Macbook Pro 15" - A1990 - Chime and keep restarting

                Any solution for this plzz report me

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