I'm using the QAM cable tuner on a Panasonic 42PD50 to pull in HD locals. Was trying to watch the ABC football tonight but HD picture kept dropping out with message "Channel not available" or "Poor signal quality". While this was happening my analog cable was affected as well, with visible noise in the analog picture. Thanks a lot, TWC.
Now the analog cable is back to crystal clear but only one HD channel is coming in (not the football, of course). For all other HD channels the TV is displaying "Poor signal quality". But as I previously said, the analog picture is completely back to normal. I have a feeling the TV "gave up" on most of the HD channels and isn't really trying to tune them anymore.
Overall, it seems to take very little interference to knock the HD channels off. If I have visible noise in the analog cable I can pretty much forget about watching the HD channels. I find it hard to adjust to the "All or nothing" signal of digital channels because there is no obvious way to tell if the problem is with the TV, something inside your house, or the signal coming from outside your house.
Now the analog cable is back to crystal clear but only one HD channel is coming in (not the football, of course). For all other HD channels the TV is displaying "Poor signal quality". But as I previously said, the analog picture is completely back to normal. I have a feeling the TV "gave up" on most of the HD channels and isn't really trying to tune them anymore.
Overall, it seems to take very little interference to knock the HD channels off. If I have visible noise in the analog cable I can pretty much forget about watching the HD channels. I find it hard to adjust to the "All or nothing" signal of digital channels because there is no obvious way to tell if the problem is with the TV, something inside your house, or the signal coming from outside your house.