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The 3 horizontal lines appeared about 3 months ago and would go out after about 15 minutes now they are permanent. We have a box with Comcast cable.
Sorry this took some time .The menu has the lines through it(TV menu)
Yes the lines are over the TV menu
They are permanent they do not move and the three horizontal lines are about the size of a pencil,The ghosting is on the right side.
The lines are white, evenly spaced, and less than a sixteenth of an inch in size.