text: whatcausesbuzzing on tv sound?   check your cable connections to make sure they are all tightened and secure. if you have a cell phone near your tv move it away, some services (like cingular) interfere with a lot of monitors.  you may need a new splitter for your connection in your cable box or your signal might be weak or noisy -- these are problems with your cable provider and they usually come out and check for free if you can't figure the problem out yourself.