My LG TV has an ambient light sensor which will adjust the brightness of the TV. One issue is that when the TV first turns on the default (or prior) brightness

My LG TV has an ambient light sensor which will adjust the brightness of the TV. One issue is that when the TV first turns on the default (or prior) brightness is often brighter than the sensor detects. Seconds after powering on, the TV will darken which if you hadn't seen the brighter version would seem normal (guests have asked if the TV is broken after witnessing this) At night (up with a sick kid) the feature is great and you couldn't imagine watching TV at night without it.