|
I agree that u49 is most likely solely for the touch and maybe ir mouse and that the board is just a pass for the lcd/backlight unit. I tested and got the same voltage at both the lcd ribbon (where the backlight ribbon is soldered to the lcd's ribbon) and at the connector on the mainboard.
Attached is a shot of the connector on the mainboard. I labeled where the ground and positive pins are on the board for backlight. I tested the ground while the unit was unplugged from battery, and still got continuity.
|