Solved: Samsung UHD 4k half screen in black - Samsung Community
4 Ways To Fix Your Samsung TV With Half Black Screen - YouTube
Samsung TV suddenly went dark on the upper half. Tried a factory reset too. It's an 'LED Backlight' 40in (7.5years old now) screen Model Number: UA40F5000ARXXT : r/24hoursupport
Samsung TV One Side is Too Dark But Another Side is OK || TV Repair Master Guide for Beginners - YouTube