How do you know your TV is old? My TV still has a great pic its a 15 y/o Samsung. Ive been having issues with sound, some programs sound very loud, some soft, others no sound! Ive read some suggestions here-in and have made changes. The one I'm stuck on is TV sound settings... i dont see decode options. As recomended by some info this forum. Do you think its time to buy a new TV?