820-01700 burning battery flex cable

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  • manubali
    Member
    • Feb 2017
    • 23
    • New Zealand
    #1

    820-01700 burning battery flex cable


    Hey everyone, i was hoping if someone have seen this issue before.

    This unit came in with liquid damaged mainly on left side cd3217, nand circuit, T2 pmu and battery pcb, replacing above mentioned components and performing dfu revive fixed the issue, but its burning ground pins of battery flex cables (on battery pcb side).

    Diode values of data lines are normal and i have tested this on multiple batteries, so this is not faulty battery.

    i measured the voltage on those pins and it goes to around 1 volt and then it burns the cable
    2 Photos
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14182
      • Canada
      #2
      Are you confident the flex cable is not being mated in the wrong direction from start to finish?

        Comment

        • manubali
          Member
          • Feb 2017
          • 23
          • New Zealand
          #3
          Originally posted by mon2
          Are you confident the flex cable is not being mated in the wrong direction from start to finish?
          Yes, flex cable connected properly, the connector size on battery pcb is smaller than the one on mlb, so no chance of wrong connection.

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