Hp laptop charging problem

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  • ahmarzo
    Senior Member
    • Mar 2015
    • 168
    • india
    #1

    Hp laptop charging problem

    Have hp laptop motherboard part no opp 17 diner skl/kbl 15289-2 with charging problem.the laptop shows plug in charging but percentage doen not increases.the schematic or boardview is not available.

    Charging ic is bq737 with voltages on pin no
    1&2 -19v
    34&5 -0v
    6 -2.56 v
    7- 0v
    8&9 -3.15v
    10 -0v
    11 -0.18v
    12 & 13 -13v
    14&15 -0v
    16 -6v
    17;18&19 -13v
    20 - 19v

    Voltages on battery connector are
    1&2. -13v
    3&4 -3.14 v
    5&6 -0v
    8&9 are ground

    Have changed first and second p channel mosfets
    Discharging MOSFET is also ok
    The battery is charging fine on another laptop.
    Have also changed the dc cable.

    Please help
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 13880
      • Canada
      #2
      Is the power adapter the proper rating for this laptop? If not, charging will halt and the cpu speed will be throttled.

      Is the battery the original and for use with this model?

        Comment

        • mon2
          Badcaps Legend
          • Dec 2019
          • 13880
          • Canada
          #3
          Does the laptop turn on without the battery?

          The measurements are showing no current draw with the adapter.

          http://www.rock-e.ca/?r=77975611

            Comment

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