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Why is my TV getting jumping screen and then vertical lines

Why is my TV getting jumping screen and then vertical lines

My Vizio M55-F0 started to give jumping screen and then vertical lines before it goes to a black screen. Power it off & on to get it back on and it starts allover again. The sound started to go out first for a year. I would just would change input selection and back to HDMI 1 and the sound would come back on. I think i have two different problems are not. Do i change out the Tcon board , Main board or power board.?

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