Asus pro p2440uq rev 2.0 not charging

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  • koby058
    Badcaps Veteran
    • Jan 2017
    • 387
    • israel
    #1

    Asus pro p2440uq rev 2.0 not charging

    Hi

    i have this Laptop, it was shorted to gnd and not turning on. i have found a shorted cap, removed it now laptop starting but it does not always charging. sometime it will charge the battery. so if started with battery and charger it will take power from the battery.

    but if started on charger only it works ok

    charger IC is Bq24780s . i have replaced it and have same issue

    Can someone help ?
    Tags: None
    • mon2
      Badcaps Legend
      • Dec 2019
      • 14592
      • Canada
      #2
      Re: Asus pro p2440uq rev 2.0 not charging

      Post all voltages on the charger IC.

        Comment

        • Sephir0th
          Badcaps Legend
          • Oct 2020
          • 1283
          • Germany
          #3
          Re: Asus pro p2440uq rev 2.0 not charging

          I highly recommend to check the diode(s) at charging controller VCC
          FairRepair on YouTube

            Comment

            • mcplslg123
              Badcaps Legend
              • Jun 2015
              • 7262
              • india
              #4
              Re: Asus pro p2440uq rev 2.0 not charging

              Usually when 19V rail is shorted, first dc-in mosfet also gets shorted(though partially). So its worth checking the resistance of both dc-in fets.

                Comment

                • koby058
                  Badcaps Veteran
                  • Jan 2017
                  • 387
                  • israel
                  #5
                  Re: Asus pro p2440uq rev 2.0 not charging

                  I have mesured resistence on two first mosfet and the first one was shorted, thank you all

                    Comment

                    • mcplslg123
                      Badcaps Legend
                      • Jun 2015
                      • 7262
                      • india
                      #6
                      Re: Asus pro p2440uq rev 2.0 not charging

                      Originally posted by koby058
                      I have mesured resistence on two first mosfet and the first one was shorted, thank you all
                      Did replacing the 1st dc-in fet solved it or not??

                        Comment

                        • koby058
                          Badcaps Veteran
                          • Jan 2017
                          • 387
                          • israel
                          #7
                          Re: Asus pro p2440uq rev 2.0 not charging

                          Yes It did

                            Comment

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