Out on our first trip of the season, the campground has cable. Both my living and bedroom TV's scan and find all the channels, the sound is good but the picture is unwatchable because it's too snowy! Luckily we can get some over the air channels and they work fine! And yes, I have the booster off when in cable mode. Any suggestions on what's causing the bad picture in cable mode? I've also checked all the connections that I can find and made sure they were tight.