When I've tried to use the TU-HDS20 in the last day, I keep gettting stuck on a certain channel on DirectTV. Last night it was 299, today it is 113. I can't key in any channel higher than 113 directly. And the guide doesn't work if I use the pg dn feauture -- it stays on 113. It will move though if I move one channel down at a time using the guide. This is weird.