I can confirm the list of 4 problems. In fact, it occurs to me that the blank recordings are a result of having a "record" scheduled on a tuner that has lost its buffer. I can't recall for sure, but I think I've actually tried "recording" when a tuner's buffer is lost, and the blank recording was the result. Also confirm the other solution I've seen here - red reset button clears the problem. I've seen no other reference to a band-stop filter as a solution. Surely cannot complain about the cost, but I'm curious exactly which device might work? There are different ones available, some even recommended for DirecTV. But on those websites, none are suggested for the THR-22. What is the logic that might support this as a solution?