17ips72 Schematic Jun 2026

Controlled by Q10 and U5 to provide power even when the TV is off. Main Voltage Rails: +12V / +12V_1: Powers the mainboard and audio circuits. +75V_1: Often used for the LED backlight driver stage.

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Inspect the optocouplers and TL431 shunt regulator responsible for voltage feedback. 💡 Sound but No Picture Controlled by Q10 and U5 to provide power