I was having trouble with Numb3rs Friday night on CBS (OTA) thru the HR20-700, went to the digital CBS just thru my TV and had the same problem, went to the analog channel and had NO problems ....
I guess every once in a while I should adjust the OTA antenna, I'll write it off as that this time, but with all the stuff going on now with the transition coming up, I just didn't know for sure.
It looks like an adjustment would have corrected the problem.
Thankfully I have a rotor on the antenna.
Jimbo