A part of display blacked out

So not too long ago I began experiencing this challenge the place a part of my display is black. I’ve tried a number of hdmi cables with the problem persisting, although I don’t expertise this challenge on a monitor. I’ve checked my television settings, my side ratio and determination are appropriate. The backlight appears to stay on within the black space, and there’s a line of purple pixels that separates the working half and the non-working half. I’ve a Sharp LC-50LB261U. I’ve no clue if it is a drawback with my xbox or with my television, assist can be a lot appreciated.