Screen won't turn on

@raoelwattamaleo

If the TV standby power light is on but the TV won't turn on when using either the remote control power button or the TV Power button, try disconnecting the power from the TV and then press and hold the TV's power button (not the remote control power button) operated for 30 seconds and then release it.

Reconnect the power to the TV and check if it turns on.

If it still doesn't turn on, go to p.28 of the service manual to find the power supply schematic and check if the voltages are OK.