Why Is Part Of My Lg Tv Screen Darker Than The Rest Of The Screen Television

Chosen Solution

Here is a picture of my LG TV

Model Number: 55LN5400

@sebastianc could be a bad backlight array or a bad power supply (less likely) LG has issues with the backlight arrays. Only way to test it would be by checking the power output to the LED’s from the power board. If that is okay you will have to disassemble the panel and check the backlight array.