GAMBLE since a 70 inch is still over a grand to replace. That board should be 100 or less.
So I recently had a horizontal line appear on my TV and it became a much worse black splotch on the screen as of yesterday. I have confirmed this happens on all inputs and over the TV menu. I was doing some research and it sounds like it is either the T con board or the LCD panel; most likely the panel. The T con is an easy fix, and the LCD panel means I just pretty much use the TV as target practice. Here's a video of the issue. Can you all help me confirm this is the LCD panel and not the tcon board?

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