Dell inspiron 3593 Charging Fault

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  • Indunil555
    Member
    • Jul 2021
    • 17
    • Sri Lanka

    #1

    Dell inspiron 3593 Charging Fault

    Dell inspiron 3593
    FDI55 LA - J081P Motherboard
    Rev 1.0

    Laptop Battery not charging.
    Laptop work only battery power.
    Adaptor connected ( 19v DC Jack) Motherboard main voltages ok but no display and not charging.
    One time white led and 3 time orange led blinking continue.
    Charged battery install after laptop power on and display ok.

    What is the problem ?
    How to fix it ?
  • mon2
    Badcaps Legend
    • Dec 2019
    • 14065
    • Canada

    #2
    Re: Dell inspiron 3593 Charging Fault

    1) review the charger IC @ PUB01.

    2) measure the voltage on each pin of the 2 x DCin mosfets (PQB11 & PQB12)

    source (1-2-3)
    gate (4)
    drain (5-6-7-8)

    Post each measurement.

    Repeat for each mosfet.

    If all is well, the GATE voltage has to be high enough to enable the above 2 x mosfets to pass the DCin voltage to power the lower board.

    3) if the voltage is not high enough, then with great care, measure the voltage on each pin of the charger IC. Do so with caution to not short any of the pins which can cause other damage to the charger IC and then will have to be replaced.

    Post each voltage measurement in a table with each pin.

    As per the flood of other posts on this forum - the issue is often with the DCin mosfets - see the detailed sticky from @Piernov above for more information.

    Comment

    • Indunil555
      Member
      • Jul 2021
      • 17
      • Sri Lanka

      #3
      Re: Dell inspiron 3593 Charging Fault

      pqb11
      s-d 4.1mΩ
      s-g 3.6mΩ
      d-g 8.7mΩ

      pqb12
      s-d 2.5mΩ
      s-g 3.6mΩ
      d-g 8.4mΩ

      Comment

      • mon2
        Badcaps Legend
        • Dec 2019
        • 14065
        • Canada

        #4
        Re: Dell inspiron 3593 Charging Fault

        1) resistance is fine.

        2) proceed to test the voltage measurements noted in the post.

        Comment

        • mcplslg123
          Badcaps Legend
          • Jun 2015
          • 7262
          • india

          #5
          Re: Dell inspiron 3593 Charging Fault

          Voltage on SDA/SCL present on battery connector??

          Comment

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            Dell inspiron 3593 Charging Fault
            by Indunil555
            Dell inspiron 3593
            FDI55 LA - J081P Motherboard
            Rev 1.0

            Laptop Battery not charging.
            Laptop work only battery power.
            Adaptor connected ( 19v DC Jack) Motherboard main voltages ok but no display and not charging.
            One time white led and 3 time orange led blinking continue.
            Charged battery install after laptop power on and display ok.

            What is the problem ?
            How to fix it ?
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