I have a 20 yr old 27" RCA analog TV hooked to a digital box, running to a VCR, which also has a DVD and stereo system hooked into it. I have an antenna on the house. No cable. (I know I'm outdated, but I'm one of those "if it ain't broke, don't fix it" types and have to be!) A couple of weeks ago, the sound started coming and going only on NBC. At first, it was only the commercials, which was fine with me, but now it can be about anything. Sometimes, it will eventually come back on it's own in the middle of a program. Other times, it won't... and it's ONLY on the one station. This doesn't make sense to me. I would sure appreciate some help. I can't afford a new TV. Thanks!