Tv has no picture. My sanyo 31" tv will not show a picture. When I turn it on I see nothing

Question

My sanyo 31" tv will not show a picture. When I turn it on I see nothing but static. When I turn it to video it works fine. So I'm able to watch dvds but not cable. I have checked the cable in two differnt rooms and it does the same thing. The other tv works fine on these cable outlets. If you have any information I would appreciate it. Thanks