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Dell 3593 Ps_ID issue (anopther one)

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    Dell 3593 Ps_ID issue (anopther one)

    Hi guys,

    Need some help again please.
    I have a Dell 3593 that just refuses to charge, giving the usual adaptor warning.
    The charger is original, and works on another Dell. The battery is the same story.

    2 questions.

    1. does a bios downgrade fix these issues

    2. If not, please can someone explain in very laymans terms how I override this stupid thing?



      Hello. You have posted in the wrong forum. Repost the same inside the laptop forum.

      Yes, this is a very common fault and there are many threads of the same issue with fixes inside the laptop forum.

      In summary - Dell uses a 1-wire communication line (is the Maxim / Dallas Semiconductor) protocol to extract vital data from the power adapter. This is often called the PS_ID pin in the schematic. This is also the needle like pin inside of the round barrel jack of your power adapter. This pin must make contact from the power adapter and onto the board and travel to the EC controller on the logic board. The EC controller is a 8051 / Arm processor that is wanting to read out the specs of your power adapter. Often, the pin does not make contact or the wimpy mosfet in the middle of this communication line gets damaged and raises the same fault as yours.

      Start with hunting the other articles in the laptop forum and raise your questions if you still have any after this search. See you there.

      Troubleshooting Laptops, Tablets, and Mobile Devices - Badcaps

      One example of many similar posts:

      DELL 3521 PS_ID Woes - Badcaps

      See below partial schematics of your board.

      Carefully measure the voltage to ground of the inductor @ PL3 with the power adapter connected.

      Click image for larger version  Name:	PS_ID1.png Views:	0 Size:	97.3 KB ID:	3291732

      Click image for larger version  Name:	PS_ID2.png Views:	0 Size:	105.8 KB ID:	3291733
      Last edited by mon2; 06-16-2024, 07:03 PM.


        Thank you.