Charging Issue on Dell G3 3579 (LA-F611P)

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  • CIT
    Member
    • Apr 2020
    • 12
    • South Africa

    #21
    Re: Charging Issue on Dell G3 3579 (LA-F611P)

    Could it be possible that the ISL95522 chip is the problem? Should I order a replacement?

    Comment

    • CIT
      Member
      • Apr 2020
      • 12
      • South Africa

      #22
      Re: Charging Issue on Dell G3 3579 (LA-F611P)

      Or could the problem be with the PUB02 I replaced at first to get the unit switching on again?

      Comment

      • classicandy
        Badcaps Veteran
        • Apr 2018
        • 308
        • Nigeria

        #23
        Re: Charging Issue on Dell G3 3579 (LA-F611P)

        Hello All, i have two units of this exact Dell G3 [LA-F611P] model with charging issue very similar to each other.

        Motherboard 1
        PU01 and PUB02 got burnt

        Motherboard 2
        PU01, PUB02, PUB01 and UE1 [Pin 128] got burnt.

        I have replaced all components affected that I am aware of on both motherboards BUT immediately I connect the charger, PU01 and PUB02 burns again on both motherboard, but PUB01 and UE1 still looks intact.

        Please, I want to ask if anyone here is familiar with what might still be faulty that I may have not noticed.

        Comment

        • classicandy
          Badcaps Veteran
          • Apr 2018
          • 308
          • Nigeria

          #24
          Re: Charging Issue on Dell G3 3579 (LA-F611P)

          here are some images of the area on the motherboard where I have worked on.

          For the Schematics. https://www.badcaps.net/forum/attach...5&d=1579446418
          Attached Files
          Last edited by classicandy; 09-08-2023, 09:59 AM. Reason: added schematics link

          Comment

          • mcplslg123
            Badcaps Legend
            • Jun 2015
            • 7262
            • india

            #25
            Re: Charging Issue on Dell G3 3579 (LA-F611P)

            Did you replaced all the mosfets along with charging IC? If no a big mistake. Resistance to GND measurements on pin 5 of PU01?

            Comment

            • classicandy
              Badcaps Veteran
              • Apr 2018
              • 308
              • Nigeria

              #26
              Re: Charging Issue on Dell G3 3579 (LA-F611P)

              Originally posted by mcplslg123
              Did you replaced all the mosfets along with charging IC? If no a big mistake. Resistance to GND measurements on pin 5 of PU01?
              Thank you for your prompt reply.

              No, i didn't replace the MOSFETs but i tried checking for shorts on them [S, G, D] using diode mode on my meter though.

              Resistance to GND on pin 5 of PU01 = 38.8K Ohms [with PU01 Absent]

              Comment

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