820-3437 No Backlight / R7715 & R7731 pads corroded and gone.

As the title says, this is a board that came in with liquid damage, upon cleaning both resistors came off the board, with little force, and the pads are gone too. I know I will have to run a wire to ball 3 of U7701, my question is how much voltage is on BKL_EN, and what could I leach off of to supply that voltage?
 
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2informaticos

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BKL_EN is exactly 1/3 of PPBUS_G3H.
It varies, depending of battery level; at least 2V needed there,no more than 3.42V...
 
Ok, so should I run a wire from C7711 (3.3V) to BKL_EN (A3)?

I cant fine any 2V source, and this was the closest source of 3.3V.

EDIT: C7711 is PP3V3_S0
 
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