I have a un46c6300. My DVR box fro Cox has dvi->hdmi and component out. Obviously I want to use the dvi->hdmi connect but it does not carry audio. The video is magnificent! If if use just the audio component connections in addition to dvi, I get no sound. None. Zip. Zero. It seems the audio in over-rides the use of the dvi->hdmi connection.
What are my options? A home theater system to run audio to speakers but let video go to the TV?
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Try contacting COX and see if they have a replacement DVR box with native HDMI out.
Tried that. No luck. "Maybe in the future".
Are you plugging in the audio from the box to the "pc audio" jack using the supplied rca-to-mini dongle?