Dell ac power adapter type cannot be determined

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  • Inforgalaxie
    Member
    • Apr 2023
    • 37
    • Portugal

    #1

    Dell ac power adapter type cannot be determined

    Hi, there is a tipic problem on Dell but my is very strange.

    On PU111 i have this voltages:

    Pin1:0.78V
    PIN2: 0V
    PIN3: 3,19V
    PIN4:3.07V
    PIN5: 5V
    PIN6:0V

    PL3 have 3.19V

    What you think that can be? SIO? because PIN6 is 0V?
    I Attach schematic.

    There is a way to solve this problem?
    Attached Files
    Last edited by Inforgalaxie; 04-22-2023, 04:55 AM.
  • Vesko356
    VIP Moderator
    • Aug 2018
    • 4386
    • Bulgaria 🇧🇬

    #2
    Re: Dell ac power adapter type cannot be determined

    You can unsolder temporary PU111 and bridge pin3 to pin4 to see if it solve the problem, or check the charging DC in jack, there may be a poor contact between the center pin and the jack, if you are sure the charger is genuine and working.

    .
    Last edited by Vesko356; 04-22-2023, 06:14 AM.
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    • Inforgalaxie
      Member
      • Apr 2023
      • 37
      • Portugal

      #3
      Re: Dell ac power adapter type cannot be determined

      The Bridge PIN3 and PIN4 solve the problem...

      I not have a new PU111.. The is any problem if i just bidge to solve the problem?
      Last edited by Inforgalaxie; 04-22-2023, 01:44 PM.

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      • Vesko356
        VIP Moderator
        • Aug 2018
        • 4386
        • Bulgaria 🇧🇬

        #4
        Re: Dell ac power adapter type cannot be determined

        Originally posted by Inforgalaxie
        The Bridge PIN3 and PIN4 solve the problem...

        I not have a new PU111.. The is any problem if i just bidge to solve the problem?
        If you don't use a docking station, you can leave it like that, otherwise you must replace it.

        .
        ----------------------------------------------------------------------------------------------------------------------------------------------------------
        All donations to Badcaps are welcome.
        Become a Badcaps supporter
        >>>>> click on this link to donate <<<<<
        Thanks to all supporters.​
        ----------------------------------------------------------------------------------------------------------------------------------------------------------
        Doctrina est fructus dulcis, radicis amarae.
        .

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        • diamon
          Senior Member
          • Feb 2010
          • 87
          • Netherlands

          #5
          Re: Dell ac power adapter type cannot be determined

          Don't you have a other Dell motherboard laying around?.
          Few days ago, I used a Dell E6320 motherboard (chip PU1) to fix a Dell E7240 motherboard (chip PU111).
          The adapter did not get recognized in the bios, and with bridging pin 3+4 it did worked again.

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