RCA television suddenly has problems with cable...

Question

I have cable connected to my RCA 19" television (no converter box or VCR attached). Picture was great until I moved the set across the room. As a result, channels 2-10 get lousy reception with snow and ghosting. I checked all the connections and still no luck. These channels aren't even recognized while doing a channel search. All the other channels to 100 come in fine. Any ideas?