Dell XPS AC Adapter Unknown

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  • medinfo
    Badcaps Veteran
    • May 2016
    • 328
    • Morocco

    #1

    Dell XPS AC Adapter Unknown

    Dell XPS 15 9560

    Power Adapter and Power Jack are ok

    Laptop = 19.5v --- 6.67A --- 130w

    Power Adapter = 19.5v --- 6.67A --- 130w

    error :

    Alert! The AC power adapter wattage and type cannot be determined. the battery may not charge. the system wil adjust the performance to match the power available
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30997
    • Albion

    #2
    Re: Dell XPS AC Adapter Unknown

    sounds like the old 1wire problem.
    a memory device in the charger that the laptop reads data from.

    NOT faulty usually, but caused by a bad connection in the cable.

    Comment

    • medinfo
      Badcaps Veteran
      • May 2016
      • 328
      • Morocco

      #3
      Re: Dell XPS AC Adapter Unknown

      Power adapter is ok
      power jack is ok
      Attached Files

      Comment

      • R_J
        Badcaps Legend
        • Jun 2012
        • 9535
        • Canada

        #4
        Re: Dell XPS AC Adapter Unknown

        I found this, give it a try, it turns off the warning in the bios https://www.dell.com/community/XPS/W...d/td-p/6045885

        Comment

        • stj
          Great Sage 齊天大聖
          • Dec 2009
          • 30997
          • Albion

          #5
          Re: Dell XPS AC Adapter Unknown

          Originally posted by medinfo
          Power adapter is ok
          power jack is ok
          the white wire is a data wire to a memory chip in the charger.

          Comment

          • medinfo
            Badcaps Veteran
            • May 2016
            • 328
            • Morocco

            #6
            Re: Dell XPS AC Adapter Unknown

            it only disables the error message, does not fix the problem (R_J)

            Comment

            • budm
              Badcaps Legend
              • Feb 2010
              • 40746
              • USA

              #7
              Re: Dell XPS AC Adapter Unknown

              Are you using original Dell adapter or third party adapter?
              Never stop learning
              Basic LCD TV and Monitor troubleshooting guides.
              http://www.badcaps.net/forum/showthr...956#post305956

              Voltage Regulator (LDO) testing:
              http://www.badcaps.net/forum/showthr...999#post300999

              Inverter testing using old CFL:
              http://www.badcaps.net/forum/showthr...er+testing+cfl

              Tear down pictures : Hit the ">" Show Albums and stories" on the left side
              http://s807.photobucket.com/user/budm/library/

              TV Factory reset codes listing:
              http://www.badcaps.net/forum/showthread.php?t=24809

              Comment

              • medinfo
                Badcaps Veteran
                • May 2016
                • 328
                • Morocco

                #8
                Re: Dell XPS AC Adapter Unknown

                Original Dell Adapter 19.5v --- 6.67A --- 130w

                Comment

                • momaka
                  master hoarder
                  • May 2008
                  • 12170
                  • Bulgaria

                  #9
                  Re: Dell XPS AC Adapter Unknown

                  I've seen this A LOT on returned laptops. I think what happens is those newer adapters simply have a very crappy cable that looses/breaks the middle (ID/identification) pin. So despite the power adapter outputting the proper voltage, the laptop cannot properly ID the adapter and thinks it's a generic/no name and/or low-power adapter.

                  Comment

                  • stj
                    Great Sage 齊天大聖
                    • Dec 2009
                    • 30997
                    • Albion

                    #10
                    Re: Dell XPS AC Adapter Unknown

                    sometimes cables break, sometimes static kills the chip - it has no zener diode or similar to protect it.
                    there is pic chip code floating around to simulate them.

                    Comment

                    • medinfo
                      Badcaps Veteran
                      • May 2016
                      • 328
                      • Morocco

                      #11
                      Re: Dell XPS AC Adapter Unknown

                      Problem fixed

                      Comment

                      • stj
                        Great Sage 齊天大聖
                        • Dec 2009
                        • 30997
                        • Albion

                        #12
                        Re: Dell XPS AC Adapter Unknown

                        and the problem / fix was??

                        Comment

                        • momaka
                          master hoarder
                          • May 2008
                          • 12170
                          • Bulgaria

                          #13
                          Re: Dell XPS AC Adapter Unknown

                          Originally posted by stj
                          and the problem / fix was??
                          LOL.
                          Don't you just love it when they say that!

                          Comment

                          • stj
                            Great Sage 齊天大聖
                            • Dec 2009
                            • 30997
                            • Albion

                            #14
                            Re: Dell XPS AC Adapter Unknown

                            i see it too often!

                            Comment

                            • sam_sam_sam
                              Badcaps Legend
                              • Jul 2011
                              • 6037
                              • USA

                              #15
                              Re: Dell XPS AC Adapter Unknown

                              LOL

                              Or it could be —> do not want to deal with anymore

                              Comment

                              • momaka
                                master hoarder
                                • May 2008
                                • 12170
                                • Bulgaria

                                #16
                                Re: Dell XPS AC Adapter Unknown

                                Originally posted by stj
                                i see it too often!
                                When I do, I no longer read that person's threads - particularly help requests.

                                Comment

                                • Ibrahim alhanafy
                                  New Member
                                  • Dec 2017
                                  • 7
                                  • Egypt

                                  #17
                                  Re: Dell XPS AC Adapter Unknown

                                  Dell 5470 unknown ac adapter I replace charger an motherboard caple and I face the same proplem what can I do ??

                                  Comment

                                  • stj
                                    Great Sage 齊天大聖
                                    • Dec 2009
                                    • 30997
                                    • Albion

                                    #18
                                    Re: Dell XPS AC Adapter Unknown

                                    get a schematic and check the 1wire bus circuit.

                                    Comment

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