Facing TV Problems? Ask a TV Technician.
How do you get TV, is it cable, satellite, or antenna?
If cable, do you use a set top box or does the cable come from the wall and screw into the connector on the back?
Do you have any other sources connected to this TV, like a DVD player, and if so, does the problem happen with it?
And, it would really help to have the model number of the TV, but I'm guessing this is not a high def TV.