Fuzzy TV, the rest is ok?

this morning i woke up to find my tv all fuzzy and only my TV. All the other TVs in the house work properly. I've checked the wiring and everything is ok. Installation is correct and no chewed up wires. My TV is about 13' and its an Orion brand and its those old box TVs...it has always worked fine until just this morning. I do have Dish Network cable company and have not tried calling them yet. Anyone know any suggestions?