In my experience guests unplug cables and change them around ALL THE TIME. They connect to their own devices, replug things, change... Not every guest but often enough to see a pattern. Usually it takes a call to me and I go and replug. I check the sound system every changeover but not the TV/DVD. As I am hopeless at resetting channels when a guest has lost them I say in the listing description that TV reception is erratic but there are plenty of movies available. Literally hundreds. This way, they are forewarned and cannot claim compensation if the TV isn't up to it.
Since you live in another state, I suggest you say the same. ''TV reception is unreliable and cannot be guaranteed though it is usually great'' or something like that.