Announcement

Collapse
No announcement yet.

Dell Precision 5540 LA-H331P Rev: 1.0 lost components

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Dell Precision 5540 LA-H331P Rev: 1.0 lost components

    I got Dell Precision 5540 LA-H331P Rev: 1.0, MB with some lost components, can someone post a close up photo of bios (UH8) with surrounding please. Click image for larger version  Name:	bios.jpg Views:	0 Size:	340.6 KB ID:	3555444
    Attached Files

    #2
    Hi.

    1) Suggest to flux and clean up the left side of the bios @ UH8. From the posted angle, there is an appearance of a few shorts. Each contact must be a clean soldered connection to the main logic board.

    See here as an example:

    https://www.badcaps.net/forum/troubl...ahp9-bios-chip

    Note that each of the 4 solder points are clean.


    2) See attached.

    Click image for larger version  Name:	bv1.png Views:	0 Size:	31.0 KB ID:	3556928


    Click image for larger version  Name:	bv2.png Views:	0 Size:	30.4 KB ID:	3556929

    Click image for larger version  Name:	bv3.png Views:	0 Size:	36.1 KB ID:	3556930

    Click image for larger version  Name:	bv4.png Views:	0 Size:	36.3 KB ID:	3556931

    Click image for larger version

Name:	bv5.png
Views:	103
Size:	38.2 KB
ID:	3556932

    Click image for larger version

Name:	bv6.png
Views:	104
Size:	36.5 KB
ID:	3556933

    Click image for larger version

Name:	bv7.png
Views:	104
Size:	31.3 KB
ID:	3556934
    Last edited by mon2; 01-25-2025, 04:00 PM.

    Comment


      #3
      Missed one part:

      Click image for larger version

Name:	bv8.png
Views:	97
Size:	33.8 KB
ID:	3557020

      Comment


        #4
        Hi, i cleaned the board and checked the traces add some solder mask, missing parts are on the board now - according to locations and values from pictures, skipped RT1136 and RH133 since both of them are 0 ohm and on MB the traces are bridged.
        There is one more issue now, it turn out the UH8 (bios) didn't survive and its not responding any more, i already found the bios file, unfortunately i don't have 25q256 around so i need to order it.
        I'll keep you updated, thank you for your support.
        Attached Files

        Comment


          #5
          Hi.

          Update:
          Laptop is up and running after installing new bios chip.

          Thank you for help !

          Comment

          Working...
          X