Originally Posted by imunick
Bear with me. I'm not good at these settings.
It's a coaxial cable from Dish to TV cable input.
I don't have Dish but if your Dish box(STB) has component, DVI or HDMI outputs they would probably be better than coaxial cable.
This happen even with DVD.
Which DVD player do you have and how is it connected.
Did you switch your Dish STB, and your DVD player to the new TV yourself?
Both the Dish STB, and the DVD player have to be configured to work with a 16x9 screen (your new one) instead of a 4x3 screen ("my previous Sony CRT"?). Sometimes there is a mechanical switch on the back of the STB or DVD player. Many newer ones have menu items that allow you to select either a 4x3 or 16x9 TV screen.
It's worth double checking.