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visually, there's no liquid damage..
r4750 looks bad, but when i measure it, it still has 20v on ppdcin
i have ppbus g3h is 8.6v
but PPVIN_G3H_P3V3G3H is 20v, shouldnt it be 3.3v ? is the bad r4750 causing it ?
PPVIN_G3H_P3V3G3H comes from PPVIN_G3H, so 20V is correct!
It powers up the 3V3_G3H power supply.
Do you get all S3/S0 voltages?
However, I do not recommend to waste time on this board.
It will end with dead CPU, like all A1534.
You can try to reflow entire board, just for test.