They may know about it but you can't warrant the repair and may damage your reputation if you did the repair and it failed later.
Bandaid solutions are not what I want from a TV tech.
Sorry about previous post.
I'm experiencing thin black lines from the top of the screen to the bottom. It covers about a 1/3 of the entire screen. Did a Picture Test still no improvement. I played a DVD as well, I still see the lines. I viewed HD as well as Standard channels, still see the lines. Any advise?