u/DeepBlackShaft

I have an old ProScan LED TV and recently it's started having a clean break down the middle of the screen where one side is more bright then the other. I checked all the settings, reset to factory, nothing in there that would make it seem like a setting would cause this. Is the backlight just broken on one half of the TV? And if there was wouldn't there be a bit of light bleed from one half to the other and not a clean line you can see in the picture? Any help would be great thanks y'all.