Dell laptop power supplys

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Hagis2k
    Senior Member
    • Jul 2006
    • 66

    #1

    Dell laptop power supplys

    I got two dell laptop psu for free a few days ago i meassured them and they seem 'ok' but there is some issue with the identification circuit in them
    it have an normal 'dc-plug' in the end except it has an outer metal connection 'plate' and an inner 'ring inside it' minus at the outer and the inner has the 19.5V on it then you have an metal pin that i assume shall have a few volts so the bios in the laptop can identify the psu model the connector looks like this (cutted in half):



    The ic im suscpect to be bad is labeled: Dallas 2501031C4257AB







  • arneson
    Badcaps Legend
    • Sep 2005
    • 1267

    #2
    Re: Dell laptop power supplys

    Hagis2K, Thank you for showing this.
    I have a collection of these, PA10 family and PA12s.
    The one in my hand has been opened just like yours, it was also not recognized.
    There are different versions of this and mine does not have the chip you mention.
    This older power pack has three conductors back to the wall outlet, the newer ones I have are two prongs at the wall.
    Jim

    Comment

    • Hagis2k
      Senior Member
      • Jul 2006
      • 66

      #3
      Re: Dell laptop power supplys

      this is a pa-1900-02d unit btw...

      Comment

      • arneson
        Badcaps Legend
        • Sep 2005
        • 1267

        #4
        Re: Dell laptop power supplys

        The big cap with rev number is 03 on this one.
        Caps aren't labeled Rubycon in it, look like panasonic KMG?
        This one is also PA-1900-02d but the board is different at the center pin conection to the device labeled QID.
        Jim

        Comment

        Related Topics

        Collapse

        • mikey5791
          Dell laptop model PP24L won't start from ac adapter
          by mikey5791
          Dear all,

          Bought this used Dell laptop PP24L(studio 1435) in Jan 2022. It was running smooth on 64 bit Windows 7 pro from processor Intel core Duo T6400@2Ghz with 2GB RAM. The laptop battery was charging and working fine until few months back the opening screen will display something like "replacing the battery warning", press F1 to continue. Normally i press F1, the laptop will proceed to Windows and i can use as normal.

          But last week, after i pressed F1, the laptop just shut down. I suspected the laptop battery is dead. So i pulled out the battery and...
          03-24-2023, 09:06 PM
        • Mots06
          Old Dell E5400 Laptop ( Purchased in the year 2008)
          by Mots06
          Hi, I'm unable to find the motherboard number (PPID number) or the board view for this old laptop. My laptop won't start, and when I enter the serial number on the Dell website, it says the number is invalid. The sticker on the bottom is unreadable because it has faded over time. Unfortunately, I'm unable to start the laptop to use the power cell or explore other options.I needed the CMOS Cell & it also seems the Laptop will not start now because of the power switch issue, which is yet to be detected.
          07-19-2025, 01:56 AM
        • Bowline
          Dell E6400 PT434 type Battery Charging Stuck at 1%. Battery Pinouts?
          by Bowline
          My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?

          Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?

          My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
          The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
          I have tried multiple different Dell power adapters. My Dell...
          06-11-2025, 10:13 AM
        • Calidebear
          Dell 3537 laptop doesn't boot without embedded display.
          by Calidebear
          Hi,

          I have this laptop for a long time, still it does it's job, like browsing, word , excel. Two years back laptop Hinge base broken but now it's damaging other parts of laptop so I tried to totally remove the embedded display cable from laptop and tried to boot only with external display monitor, but it doesn't boot and gives single beeps. BIOS checking the embedded display to be connected.
          So checked the schematics to bypass this issue.
          Found something but I don't know how to read this schematics.

          Dell 3537 mobo 9982p rev 3

          Schematics attached,...
          03-29-2025, 11:37 AM
        • Document Archive
          Microsoft Surface Laptop 3 13.5-inch i5/8GB/256GB SSD Laptop Platinum Notebook Specification for Upgrade or Repair
          by Document Archive
          This specification for the Microsoft Surface Laptop 3 13.5-inch i5/8GB/256GB SSD Laptop Platinum Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the Surface Laptop 3 13.5-inch i5/8GB/256GB SSD Laptop Platinum boardview and Surface Laptop 3 13.5-inch i5/8GB/256GB SSD Laptop Platinum schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from...
          09-06-2024, 09:30 PM
        • Loading...
        • No more items.
        Working...