This answer provides information for disabling different features that may cause the TV to turn on or off automatically:
If the power is turning on:
- Disable On timer.
- Set the Auto TV on or TV auto power on setting of BRAVIA Sync settings or HDMI CEC Settings to Off.
- Set the Remote Start on setting of Network settings or BRAVIA settings to Off.
If the power is turning off:
If the above steps do not help to resolve the symptom, reset the TV to the original factory settings