A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

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  • mbcontrol
    Member
    • Apr 2020
    • 13
    • Germany
    #1

    A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

    Hello,
    i am working on a water damaged 820-01598 and have a short question about the voltage on line CHGR-BGATE from U7000. The board is out of the machine and nothing connected.

    I measure pulsing 12,6V and 4,8V every 2-3 Seconds.
    Is this normal?

    (Boardview and schematics is available - but I think it's almost the same circuit as with older boards with U7000)

    Thanks for any help.
    Tags: None
    • piernov
      Super Moderator
      • Jan 2016
      • 4435
      • France
      #2
      Re: A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

      If battery is deep discharged, dead or not plugged in properly yes.
      OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

        Comment

        • mbcontrol
          Member
          • Apr 2020
          • 13
          • Germany
          #3
          Re: A1259 820-01598 is a pulsing voltage on CHGR_BGATE normal?

          Thank you piernov, that's what I suspected.

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