I am just outside of denver (zip 80601) and have been using my magnavox dtv converter box for about 4 months now. I have been getting WONDERFUL reception with all available channels for my area. However about 3 or 4 days ago I suddenly lost sound completely on 2 channels... kdvr(fox)channel 31 and abc channel 7. The video is still coming in perfectly... am not sure why or what I should do!? IT is so frustrating because these are the 2 channels i watch the most. Any suggestions or similar situations?? Thanks... Mandi.