820-3437-B KB Tpad are not working.

[Dewanbd]

It was water damaged.Changed working tpad, kb and cable but no luck.
It works for few seconds and again stop working.
J4800:
PP3V42_G3H_IPD)= 3.3v and Ground mode :
pin1= .41 ,pin2= .41 , pin3= .00 ,pin4= .355 ,pin5= .355 ,pin6=.00
pin7= .43 ,pin8= .00 ,pin9= .43 ,pin10= .33 ,pin11= ol .
pin12=.617 .pin13= .45 , pin14= .39 , pin15= .61 , pin16= .58
pin17= .59 , pin18= .54 , pin19= .283 , pin20= .533
Any help please.

 

[2informaticos]

Which area was affected by liquid spill?
Is possible to have corrosion under trackpad connector.

"It works for few seconds and again stop working."
Only on boot menu, or does it work a bit in macOS too?

 

[Dewanbd]

No corrosion under trackpad connector. It works a bit in macOS mode. I tried good known working tPad it was same issue. After booting it wasn't work but few seconds later it works and again it stop work ---- happened again and again.