Swapping an embedded I219V on HP motherboard- is it possible?

[john_vn]

Hi,

I have a HP Zbook  with - what is most likely - a problem in the embedded I219V LAN controller, which has made the machine totally unusable now (the power on process stops immediately with black screen, there is power on the motherboard ; all HP suggested fixess fail - hard reset/CMOS reset/ reseating components/.... you name it ).

Previously , there had been issues with the  LAN device:

- I could only enter  BIOS with a "live"  ethernet cable plugged in. Trying to entering BIOS without the ethernet cable plugged in ended up with the system freezing on BIOS entry

- other symptoms: the RJ45 LEDs would be on all the time (green & amber lit solid, with or without a LAN cable plugged in)

-the system would also have issues at power on at times (requiring a hard reset), ,  it would give strange errors in Windows ("problem with  LAN cable", which was not the case).

So I disabled the LAN device in the BIOS and I was able to use the computer without any single problem.

Unfortunately, I tried to do a firmware upgrade, which went ok till the restart of the system.

After the firmware upgrade , at restart I saw the RJ45 LEDs come on again (= the BIOS had the LAN controller again set as "enabled") . This time, however, there is no way to get the system powered on again( I still have power on the board but the "power on" process halts instantly when starting the machine, no access to BIOS, just black screen, RJ45 LEDs on, power on USB ports etc).

Question: is it feasible/meanignful  to swap an onboard I219V chip with a new one, as I think this is the problem. Or is there a more needed  when you  replace this chip. It's a kind of final  attempt to save this motherboard, otherwise it will be 'scrap'. 

[n_scott_pearson]

If you have support for wave-soldered device handling, you could attempt. I doubt you world be successful otherwise.
...S

[john_vn]

Thanks for your reaction. The best I have is a soldering heatgun, flux ,  magnifier, ..... 
The chip is indeed very small : 6mm * 6mm; 4*12 pins and a center pad. Wave soldering is a different game (out of reach ).