Sony WEGA Trinitron dark across top of screen
With the TV off, the top half inch of the screen is dark. With the TV on, the image displays through the dark area but is slightly less bright of course. It's more noticeable as the image darkens. Also have some discoloration on top left corner, but mostly it's the darkness across the top of the screen that is degrading the image quality right now. I haven't been able to find any examples of this problem online so I'm hoping someone has an idea. Thanks.