Sorry if this is covered someplace else, but I couldn't find much. For the last 10 days, whenever I tune to channel 206, I get a "Searching for satellite signal...(error 771)" message. The first few times, I got this for just a couple of seconds and then ESPN was on. Today, I got the message and nothing...no channel, just the message. I rebooted and still get the message for a second or so, but ESPN came on. This is true with both of my HR20-100 receivers. I never had a problem with this in the past at all. Any thoughts???