820-01598 "no camera" after screen replacement.

[KC Micro Tronix]

I have seen this problem on air boards so I figured it was just the 5v missing. It wasn't.
so I diode tested against my reference board L8502 and L8503. Readings were a little high compared to my reference board. .7 instead of .5 so I replaced U8502 and that didn't work.

Just to be sure I checked a known good display and still no camera. It does not even find the camera.

Question?
so my T2 is toast? How do I verify from here? Junk it?

 

[2informaticos]

ALS works at least?
Did you check the components from camera data lines?

 

[KC Micro Tronix]

I did. No physical signs of damage. Passives are all good. No water damage.
I probably need to put a scope on it. U3900 I am sure is bad. I wish we could change these