Vertical purple strip down right side of screen

Vertical purple strip down right side of screen

There’s a 5 inch purple strip down the right side of the screen (not all the way at the right). This ends approximately 3 inches from the right edge of the screen. This strips stays on no matter what input I change to. Channels and menus display over the strip. It does not stay solid purple. TV is a Toshiba 65L5400U.

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