I set up a new Series 2 Dual Tuner 80 Hour unit. I have cable and DO NOT have a cable box. I followed the setup instructions for this type of setup (1 coaxal cable from wall to input of Tivo). During setup after verifying my channel lineup (it asked me to verify that the channel I was watching (channel 17) was in fact ION - which it was). Next came a screen that was black in the background that asked if I could see video in the background. I could not so I selected NO and it came back to the same screen. It was a loop. So I findally selected YES and after everything finished everything seemed fine. However, when I switched to the 2nd tuner the sound skips in/out to the point that it's hard to determine what is said. The other tuner is fine. So I restarted the unit (to no avail) and completely started over with the guided setup from the beginning (to no avail). The sound skips on one tuner but not the other. What gives? why did I have trouble getting video during the setup and why is the sound skipping or cutting in out?