There are a number of reasons as to why your picture may not fit your screen including viewing an SD channel on an HDTV. Learn how to adjust aspect and picture settings of your TV with these tips.Problem with black box on screen
Learn how to troubleshoot TV issues, including fixing when a black box is appearing on the screen and is preventing you from viewing the program or on-screen guide.TV is showing blue, black, or snowy screen
Learn how to troubleshoot the issue of your TV showing a blue, black, or snowy screen. Having such screen on your TV often indicates that your TV or receiver is not powered on, or that a cable or connection issue is present.