Zenith B27A76R 27" TV "cable black square top" Questions

black bx., all of our TV services are legitimate (cable & all cable boxes), so what's the problem? Manigo the problem is common go into menu and go to text you have to shut it off. each tv is set up a

...cable TV or if we're watching a DVD. I've called the local company where we purchased the television. He told me to check the cation settings which I did, but I think these black images are not ...