OK, had the same problem with a Philip's TV and good old Comcast. Comcast really doesn't have very good support in this arena because on my three calls no one knew anything about the problem. I was getting just what you are getting sound but no video. The problem lies in the fact the Comcast box is set up so that if you plug the HDMI cable into a non compliant port the picture is not passed but the sound is. This is a copyrighted protection to make sure you are not recording anything from the cable system, but I am not sure of exactly what. Anyway, you have two solutions, connect with component cables or fine an HDMI port on the back of your TV that is compliant with this signal. On my Philips it was HDMI-3 that met the requirement. If you have only one HDMI connection, then you may have to try component cables.
Hello everyone -
I'd really appreciate any help you might be able to provide. I just bought my first HDTV. It's far from a "high-end" (Dynex DX-L42-10A) but I don't believe the troubles I'm having are brand quality related. (hopefully!)
Anyway, to my problem -
I have an HDMI cable connecting the cable box (which I've already verified is an HD cable box and is set up properly according to my cable company), to my TV. All of the non-HD channels work perfectly. Everything is perfect.
As soon as I click to an HD channel, the "HD" light on the cable box lights up, as though it is recognizing that I'm on an HD channel, and I can HEAR the audio, but there is no video. It's just a black screen.
Does anyone have any ideas for what to check? I'd *really* appreciate any help!
Thanks in advance -