Dell D620 Intel LA-2791 3 LED then power off fixed

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Th3_uN1Qu3
    Believe in
    • Jul 2010
    • 6031
    • Romania

    #1

    Dell D620 Intel LA-2791 3 LED then power off fixed

    Dell D620, Intel integrated version, mainboard LA-2791. Problem: Powers on, power LED comes on, all 3 LEDs on keyboard come on (num, caps, scroll) then turns back off. No video. During this time all voltages are present.

    Solution: Desolder BIOS and flash using programmer. BIOS available on Dell's site here: http://www.dell.com/support/home/ro/ro/robsdt1/Drivers/DriversDetails?driverId=JPCCR]Dell Latitude D620, A07[/url], download file, open a command prompt window in the folder you downloaded it, type in "D620_A07.exe /writeromfile" and it'll spit out the binary. Flash ROM file using programmer.

    Or you can grab it in the attachment.

    If the board stays on after flashing but flashes Caps Lock and Scroll Lock LEDs with no video, power off, remove all RAM, power on without RAM and you should get the same flashing pattern. Power off again, put RAM back in, board should now display video and boot normally.

    Hope this helps someone.
    Attached Files
    Originally posted by PeteS in CA
    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
    A working TV? How boring!
  • sopik78
    Badcaps Veteran
    • Nov 2013
    • 517
    • Czech Republic

    #2
    Re: Dell D620 Intel LA-2791 3 LED then power off fixed

    Thanks for sharing

    Comment

    • kalimuthu
      Member
      • Jul 2012
      • 19
      • india

      #3
      Re: Dell D620 Intel LA-2791 3 LED then power off fixed

      Thanks for help

      Comment

      • kalimuthu
        Member
        • Jul 2012
        • 19
        • india

        #4
        Re: Dell D620 Intel LA-2791 3 LED then power off fixed

        I attach one more bios file

        Comment

        • kalimuthu
          Member
          • Jul 2012
          • 19
          • india

          #5
          Re: Dell D620 Intel LA-2791 3 LED then power off fixed

          Here working bios
          Attached Files

          Comment

          • davodamirajam
            New Member
            • Apr 2017
            • 9
            • iran

            #6
            Re: Dell D620 Intel LA-2791 3 LED then power off fixed

            Originally posted by kalimuthu
            Here working bios
            my d620 error is 2 right led is blinking
            ram detect problem
            after too many bios file

            start to re heat (not reball )simply heater gordak 945
            350 ° C for 2 minutes with Intel North Chip Flex Oil

            i mean very big chip up ram memory becuase vga +ram detection is that chip job

            now fixed
            any way tested bios dumped by ch341a uploaded to people
            d620 90 % nvdia chip problem
            but in my case north birge must heated
            Attached Files

            Comment

            Related Topics

            Collapse

            • PantherDave
              Microsoft Surface Pro (5th gen) model 1796 - no power
              by PantherDave
              Hi all!

              I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅

              I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
              https://www.badcaps.net/forum/troubl...-hardware-devi...
              05-29-2024, 02:01 PM
            • zlr8r
              Dell inspiron 17 (7786) - DP/N 09P7JP - odd power issues, starting with no power LED
              by zlr8r
              hey guys, hoping for some pointers to repair an eBay bought "faulty" laptop.

              Ill try and give as much info as I can.

              Dell Inspiron 17 (7786) Laptop
              Service Tag: 5J0NHT2
              Bios: 1.9.0

              When I received this , it would only flicker on the KB backlight for a second, then off and on.
              Then it started getting weirder!
              Sometimes when attaching the AC power supply, and pressing various pre-boot diagnostic keyboard keys... it did try to boot, in fact out of a hundred attempts, the laptop did actually boot into the Bios ! but never has...
              12-12-2023, 09:31 PM
            • seppde
              Dell XPS 9380 No Power - After providing 3VALW and 5VALW once, they persist - still no power-up
              by seppde
              Hello everyone,
              I've recently gotten my hands on a defective XPS13 9380. I will attach a zip of the schematics and boardview.
              My first discovery on the Board was that the reverse current Diode PD103 of the 1st USB-C was blown.
              Nothing to worry about, the board got 3 USB-C ports which support Power/Charging. On I go.
              Next I inspected the power-rails to see why the diode blew up and found a short on the 3V3 rail which I traced back to the Power-IC for the LCD (UZ2). I desoldered it and the very low-ohmic short is gone. I checked on the LCD-connector that there's no short...
              10-01-2024, 10:57 AM
            • SuperJames
              Dell G3 17 3779 Weird power cycling and shutdown/restart issue
              by SuperJames
              This one's a weird one, and still unsolved despite it having gone back to Dell once.

              Specs

              i7-8750H, GTX 1060 Max Q, 500GB SSD & Seagate 7mm 1TB HDD. 17.3 IPS screen. This has the fingerprint reader in the power button.

              Backstory

              I bought this from eBay, from a wallpapering shop. £650 in 2020 which was a good price considering it's a gaming laptop. Physically it's in perfect shape, apart from the hinge mounts on the palmrest failing in the time I've had it (I have a new palmrest for it). The usual thin plastic crap modern build quality!...
              10-23-2023, 04:09 PM
            • rob_hen
              Dell XPS 13 9370 Laptop, No power, not charging
              by rob_hen
              Hello!

              This is my first post for help, and I am quite newer to board repair, so bear with me.

              I have this board here (LA-E671P), with no power, and doesn't charge. No lights come on when plugged in.

              After visual inspection of the board, U22 is obviously blown up. This is the for backlight, and there is no shorts present after removing the chip and replacing.

              There is 3 USB C ports to power this board, USB 1 gives 20V, while 2 and 3 only give 5V.

              My observations using USB 1 at 20V (0.075A draw on Ammeter, slowly drops from 0.136A)...
              05-01-2025, 09:20 PM
            • Loading...
            • No more items.
            Working...