Hi i need help with a Dell latitude 14 5420 GDF40 LA-K491P Rev 2.0 (A01) 2020-11-16

Collapse
X
Collapse
 
  • Page of 2
  • Time
  • Show
Clear All
new posts
Previous 1 2 template Next
  • djpaesgana
    Member
    • May 2021
    • 25
    • México
    #21
    Originally posted by mon2
    PC640 is ~21R ohms to ground? This is the +5V_ALW rail and this resistance is very low. Confirm it. Remove PC640 and test the resistance to ground again.
    i removed PC640, ground to pad 1 of pc640 reads 20.25 ohm

      Comment

      • djpaesgana
        Member
        • May 2021
        • 25
        • México
        #22
        removed pu601 all the low readingd on the UI1 and UT3 went to ~1m ohm but it starts to go up or down like charging caps

          Comment

          • djpaesgana
            Member
            • May 2021
            • 25
            • México
            #23
            i already ordered some news ui1 ut3 and pu601 ill change the 3 ill update in around 2 weeks when they arrive

              Comment

              Previous 1 2 template Next

              Related Topics

              Collapse
              • mirjana
                EC dump request – Dell Latitude 5420, GDF40 LA-K491P Rev 3.0, MEC5107-LJ
                by mirjana
                Hello everyone,

                I need the EC firmware dump for Dell Latitude 5420, motherboard GDF40 LA-K491P Rev 3.0 (A02).

                The embedded controller is MEC5107-LJ (UE1).

                The EC flash chip is W25Q80DV, 8Mbit (1MB).

                I already have the 32MB BIOS dump (W25Q256JV), but my system is still not powering on — just amber blink. I suspect the EC firmware is missing or corrupted.

                If anyone has this board and can share their EC dump from the 25Q80DV, I’d be very grateful.

                Thank you in advance!...
                07-16-2025, 12:55 AM
              • Document Archive
                DELL Latitude 5420 Notebook 5000 Specification for Upgrade or Repair
                by Document Archive
                This specification for the DELL Latitude 5420 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 5420 boardview and 5420 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 our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 5420...
                09-07-2024, 06:31 AM
              • Document Archive
                DELL Latitude 5420 Notebook 5000 Specification for Upgrade or Repair
                by Document Archive
                This specification for the DELL Latitude 5420 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 5420 boardview and 5420 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 our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 5420...
                09-07-2024, 03:40 AM
              • Document Archive
                DELL Latitude 5420 Notebook 5000 Specification for Upgrade or Repair
                by Document Archive
                This specification for the DELL Latitude 5420 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 5420 boardview and 5420 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 our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 5420...
                09-07-2024, 03:40 AM
              • Document Archive
                DELL Latitude 5420 Notebook 5000 Specification for Upgrade or Repair
                by Document Archive
                This specification for the DELL Latitude 5420 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 5420 boardview and 5420 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 our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for DELL Latitude 5420...
                09-07-2024, 03:40 AM
              • Loading...
              • No more items.
              Working...