The 2nd tuner on my SD-DVR40 lost signal on about half the channels a few days ago. It can still tune in some like the NFL Network or CNN but I get the searching for signal message on other channels. I swapped the input cables but the 2nd tuner still had the same problem. I also tried unplugging the S-video cable as suggested in other posts but it did not work. Any suggestions as to how I can fix this problem? If not, what would be the easiest way to keep all my recordings and SP's and transfer them to a spare Directivo I have sitting in the closet?