Schematic shows +3VALW generated by TPS51285 (U2). Enable signal EN1 (pin 3) is low. Trace EN1 through a diode to EC. EC is dead due to liquid damage. Replace EC (IT8227VG-192) – +3VALW rises.
If the standby light flickers or voltages cycle up and down, continuous oscillation is failing. 17ips72 schematic
Converts the transformer output back to low DC voltages. Schematic shows +3VALW generated by TPS51285 (U2)