Honestly not sure how I did it, but clearly I did it (I could try and blame the cat). I was installing a new screen in a switch light and the touch feature wouldn’t work once replaced. Tried the software re-calibration and nothing, after further investigation I noticed that there are 3 components that appear to be missing.
When opening the back of the switch, left hand side just below R bumper button near the 60pin ribbon cable please see the 3 components that appear to be missing.
I hope this google Drive with the two high res photos work. I tried uploading them but received an error.
h ttps://drive.google.com/drive/folders/1q0elnhCAb8WuRpS_2ONYN49yFO6Odx4o?usp=drive_link
I dont have a lite board by hand, so cant 100% sure if the red missing resistor(No.1) is 0 ohm or not, you could measure the one next to it and see the value if its 0 ohm, those 2 resistors value should be same.
The main guess would be this unknown value FB/inductor( No.3 in blue circle), my previous measure from the post I linked is 150nH, you probable could try bridge it after you put the 1uF cap(No.2 my guess) on
