Liquid spill(coke) 820-00840-A not detecting SSD

[Soji]

Board came with coke spill and ssd will work intermittently, we decided to thoroughly clean the board, it displayed and worked for some while then after it stopped working and displayed only folder, since then it has been permanently stuck displaying only folder.
Checked ssd voltages
L8600 had good 3.3V on both sides
L8602 had good 13V on both sides
Pin1-pin3- 13v
Pin4- 0v
Pin5- 0.003v
Pin6- 1.779v
Pin8- 0v
Pin9- 3.4v
Pin10- 3.2v
Pin11- 0V
Pin12- 3.3v
Pin13- 3.2V
Pin49-pin56 - 3.3V

 

[2informaticos]

Looks good, comparing with working board.
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820-00840-A HDD PROBLEM

device turns into question mark after a certain time . I installed a different m2 SSD and reinstalled macos. After a certain time, the question mark appeared again. I wired L8600 to try, the result did not change

boards.rossmanngroup.com

Something still affected by liquid spill.
Possibly accumulated crap underneath/inside SSD connector.