It's been a while, but if you still have the problem or if anyone does in the future, just follow these steps:
1. Unplug the television.
2. Unlplug the coaxial cable.
3. Plug the power back in and turn it on
4. Remove the channel it was stuck on from the channel memory if needed
5. Plug the coaxial cable back in
Wes
August 2008