Facing TV Problems? Ask a TV Technician.
Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Which model tv do you have?How do you get your tv channels (cable/satellite, antenna, etc)?
Are you saying the middle of the screen is blank/black, but the edges show normally?If you bring up the panasonic menu screens, using the panasonic remote, does that show properly?