Got an 820-3115 that came in with no power but green light on the charger. Front side of the board looks clean but back side has plenty of pubes, food, and nasty human junk, but I don't see any liquid damage. PP3V42 present, PPBUS_G3H present, but PPVRTC_G3H and PP3V3_S5 are going crazy. On pins 1 and 2 of U2600 I measure them and PPVRTC fluctuates between 3.3 volts and 3.47 volts and PP3V3_S5 jumps from 0 volts to 3.3 volts. Does this mean that U2600 has issues or could it be something else?