silentjim wrote:Signal strength could play a part. Cable boxes and tuners built in to your computer can require a better cable signal strength. I've had the problem before where I plug the exact same cable cord into the jack on the back of the TV and get a ton of channels but when I try a cable box in between I get no signal and no channels. You'd have to call comcast about that.
How many TVs do you currently have hooked up to Cable?
Also, most tuners in your computer I've seen recommend a manual addition of channels instead of the auto find. I again think this has to do with signal strength.
I wondered about the manual addition.......I'll have to check that out. We have five TVs hooked up to cable currently, one into a digital comcast box and the rest are through a simple cable input like the one I am attempting to use.