Dell Precision 5540 LA-H331P Rev: 1.0 lost components

[YKMN]

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.

[mon2]

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.

[mon2]

Missed one part:

[YKMN]

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.

[YKMN]

Hi.

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

Thank you for help !