DELL 12A 19V resistor burst

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • jasko_jacker
    Badcaps Legend
    • Oct 2014
    • 1137
    • italy

    #1

    DELL 12A 19V resistor burst

    Hi all,
    I connected the AC power cord and immediately the house main switch goes into protection. AC fuse is ok
    I have opened the adapter case and on its board I notice a resistor near the UCC28061 that is burst.
    I do not know the value of this resistor (R126 and r123) but I think R126 its a few homs like DC/DC notebook charger feedback resistor , right?
    How is the best way to try a repair ?
    Thanks
    Last edited by jasko_jacker; 08-11-2017, 07:29 AM.
  • CapLeaker
    Leaking Member
    • Dec 2014
    • 7999
    • Canada

    #2
    Re: DELL 12A 19V resistor burst

    Could we have some straight shot, high resolution pictures to look at?

    Comment

    • jasko_jacker
      Badcaps Legend
      • Oct 2014
      • 1137
      • italy

      #3
      Re: DELL 12A 19V resistor burst

      Originally posted by CapLeaker
      Could we have some straight shot, high resolution pictures to look at?
      I'm sorry I forgot to upload it
      Attached Files
      Last edited by jasko_jacker; 08-12-2017, 07:10 AM.

      Comment

      • momaka
        master hoarder
        • May 2008
        • 12164
        • Bulgaria

        #4
        Re: DELL 12A 19V resistor burst

        Could you also post a top-side shot too? (i.e. with the components). Seems like there are also traces on the top side too, so that may help.

        Comment

        • R_J
          Badcaps Legend
          • Jun 2012
          • 9517
          • Canada

          #5
          Re: DELL 12A 19V resistor burst

          That line connects to the CS pin of the ucc28061 ic, R126 and R123 I suspect were blown because the two transistors (next to D102) are shorted I suspect the ic is bad also.
          https://www.amazon.com/Dell-Original.../dp/B0064NQ47A ($22.95 usd)
          Last edited by R_J; 08-13-2017, 02:13 PM.

          Comment

          • R_J
            Badcaps Legend
            • Jun 2012
            • 9517
            • Canada

            #6
            Re: DELL 12A 19V resistor burst

            This Samsung tv power board BN44-00329B uses the same ic at icp801
            Attached Files

            Comment

            Related Topics

            Collapse

            • jinu_j
              Dell 2209WA - power supply - Fusible Resistor replacement
              by jinu_j
              Hi

              I am trying to repair an ancient Dell 2209WA Monitor which suddenly shut off with a pop sound. On investigation found that one of the fusible resistors had blown. Further investigation identified multiple components as faulty because of which the fusible resistor blew. Please refer the attached circuit diagram showing the components that were found to be damaged.

              1. FR950 - blown fusible resistor - 0.2 Ohm 1W
              2. Q950 - shorted Q950 MOSFET - 650V 10A N Channel Mosfet
              3. R835 - Blown Resistor - 20KOhm SMD resistor
              4. D930 - Shorted Schottkey Diode...
              05-03-2025, 10:51 PM
            • 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
            • stormanimal83
              Need resistor value R519 Phase_w Fan1_Tach_FB for Dell E4310
              by stormanimal83
              I need the value for the resistor R519 on dell E4310 mainboard. nothing to find in boardview. resistor was blown/shorted laptop didnt turn on with fan connected. i desoldered R519 but fan ist cycling up an down continuously now. laptop is running fine now but sounds crazy... Resistir is for PHASE_W FAN1_TACH_FB... rpm not given now but as i said therefore the laptop is working again...





              the upper one of two soldered here... nearest to fan


              thanks for help

              UPDATE!
              found scematics right now.... is this a zero...
              05-06-2023, 09:56 AM
            • bonusface
              Dell inspiron-24-7459 resistor value
              by bonusface
              Hello.
              I need to learn the value of the resistor shown in the picture, if anyone has this card, can they learn the value of the resistor?​
              03-27-2024, 07:38 AM
            • F R 2568
              Dell Latitude 5420 does not start (no post) need help to find the reason why
              by F R 2568
              Hello all,

              this is my first post, so if I make mistakes please do not hesitate to point them out, thank you in advance.

              I got a Dell Latitude 5420 (Service Tag: 7RFM6D3, Motherboard: GDF40 LA-491P Rev.: 2.0 (A01)) which does not start and I want to repair it. These are the symptoms:

              If the laptop is only connected to the AC adapter (battery removed):

              When I press the power button, the keyboard backlight and the display backlight are turning on. Caps key light is lightning, but key does not respond to pressing it.

              The power/battery...
              01-08-2025, 05:45 AM
            • Loading...
            • No more items.
            Working...