I've discovered recently that for some reason my local NBC station and my DVR don't seem to get along. All of my other channels seem to be fine. With NBC it has become very common for shows that are recorded to demonstrate a video 'tearing' type effect that makes the show unwatchable. This is not happening based on weather. Since it is just one channel doing this, I wouldn't think that it would be things like dish alignment. I cannot imagine that it would be a problem with the original broadcast signal.
Can anyone suggest a solution or things to investigate?
I'm not 100% sure, but I believe this is happening on both of my DVRs.