With all the new HD channels I can only get the sound. Does this mean you have to subscribe to them to get the picture, if so and I haven't subscribed why are they still there.
The new channels that you are only getting sound are MPEG4 stations, your terminal doesn't understand the MPEG4 video, so you can't see it.
Further reading here about it here Guide to MPEG4 Channels and Digital Cable Boxes
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