I have two HR24-500's in my equipment rack. This evening, I was recording The Killing on AMC Ch254. About halfway through the recording, I decided to start watching it. After I pressed Play, I immediately was prompted with the choice of saving or deleting the program. I thought this was peculiar, since the record light was still on. So, I tuned to Ch254, and received the "Searching for satellite signal..." message. I went into the Menu and checked the signal strength for that satellite, and it was 95%. I flipped over to the other HR24-500, tuned to Ch254, and was able to view the signal just fine--no noise, interference, just a nice, pure signal. I went back to the first HR24-500, and was still getting the "Searching for satellite..." message. Finally, I ran a System Test, which finished with an "Everything OK" result. However, after running the system test, Ch254 was now appearing just fine! Is there a cause for this type of behavior? I ask, because if I am not vigilant, this issue can result in a missed episode. Thank goodness for cable TV--every episode is usually repeated at least 10 times!