I have a Comcast cablecard and i am missing some channels and Pixellating on others. I called tivo tech support and they had me run dvr diagnostics. One of the settings they were shocked at was the "RS corrected" which was over 9 million and my signal strength was about 36. The tech insisted i immediately remove the coax line because he said that my tuner will fry with settings like those and i need comcast to come out to fix this. He said if the unit gets fried, then all i will see is the tivo welcome screen and if that happened, the unit is dead. I would rather watch at least some of the channels i get until comcast shows up. Can this happen? I am a tech novice, but why would tivo software permit a poor signal level to affect the hardware of the unit? I have only had my Premiere a month. The cablecard install went fine, and this issue only popped up today.