My HR20-700 has intermittent problems with tuner 1. Every couple of days when I go to certain HD channels, usually discovery HD, the picture will go away and a searching for signal message will display. I tried removing the b-band converters and swapping the lines. Each time though the same thing happens, when I go to check the signal tuner 2 has a good signal, but 1 is always at 0. Also I ran a system test and everything passes except for LNB output. If I reset the receiver everything works again and all the test pass, but it fails again after a couple of days.
Any suggestions?
Any suggestions?