Samsung TV (UA**KS****): Why does my TV screen dim or brighten by itself?

Last Update date : Sep 22. 2020

The Eco Sensor function measures the light in the room and changes the screen brightness automatically to reduce power consumption.

The screen will be brighter in a brightly lit room and darker in a dark room.

You can turn the Eco Sensor on or off by going into: 
Screen Menu > System > Eco Solution > Eco Sensor > select On or Off.

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