A1706 820-00239a question mark and not charging

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  • Harryrepair
    Senior Member
    • Jul 2016
    • 82
    • Germany
    #1

    A1706 820-00239a question mark and not charging

    Hello community,

    i am troubleshooting this machine since 3 weeks.
    It had a liquid damage.
    What i did so far:

    Changed pch and isl95828 (cpu controller)
    Machine is turning on now and shows me question mark.
    It does not charge the battery.

    First i‘d like to work on ssd.

    R9350 and the trace is ok
    J9600 is ok

    R9406 Input 5V - NO OUTPUT
    R9401 Input 5V - 5V OUTPUT (should be 2.7V?)

    I appreciate all help and hints!

    Regards
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14659
      • Canada
      #2
      Re: A1706 820-00239a question mark and not charging

      Guessing that you have seen the following video since you mentioned R9350?

      https://youtu.be/WbuRSUitwCw

        Comment

        • Harryrepair
          Senior Member
          • Jul 2016
          • 82
          • Germany
          #3
          Re: A1706 820-00239a question mark and not charging

          Yes, there are couple machines with problems at this probe point.
          Mine is fine ppvin is passing to R9350

            Comment

            • piernov
              Super Moderator
              • Jan 2016
              • 4439
              • France
              #4
              Re: A1706 820-00239a question mark and not charging

              Originally posted by Harryrepair
              R9406 Input 5V - NO OUTPUT
              Find out why it's missing then, broken resistor, broken trace, short to ground…
              OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

                Comment

                • Harryrepair
                  Senior Member
                  • Jul 2016
                  • 82
                  • Germany
                  #5
                  Re: A1706 820-00239a question mark and not charging

                  Changed R9406 and R9401

                  Why is the output of R9406 5.1V although it should be 2.7V?

                  SSD_RESET_L is high? This signal comes straight from U0500,isnt it?

                    Comment

                    • Harryrepair
                      Senior Member
                      • Jul 2016
                      • 82
                      • Germany
                      #6
                      Re: A1706 820-00239a question mark and not charging

                      Changed Resistors, did internet recovery and device is working good.
                      Merci pour votre aider

                        Comment

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