Commercial service and installation technician, been with the company 8 years doing technical troubleshooting and installations for residential and commercial accounts. Im a front line tech and get to see more information of problems than people sitting behind a desk using scripts to help you... Follow me i can help.
first check your tv is not on mute, then check your cable box is not on mute
If your cable remote is programmed on your tv then do the following Press tv then press mute , if it works then cool press cable then press mute press cable then press menu 2 times , then go to configuration press audio make sure prefered audio is default and optimise stereo is pressed it should go to stereo
If all them fail are you on component or rca cables . Make sure that the red and white is connected to the box correctly there your audio.
If that fails then connect a dvd or something to your tv and make sure its not the tv if it is do not make a service call as you will be billed and you need to get your tv fixed. If the sound works then either make a call to swap out the box or go swap one out at your closest service office.
Make sure the box and the tv are not on mute. Just hit tv then mute and tgen hut cable and mute. If this doesnt help make sure all cables from box to tv are pluggedin. For example the red and white rca cables. You can also check your stero system if you have one. Maybe the input is on .The wrong selection or just not on.
If you are using one of the small DTA (Digital Transport Adaptors) and a small black remote, there is a lang button on it that you need to push. It is for instances where a station is simulcasting in another language (usually Spanish). If the station is not simulcasting, then there won't be any sound. It is an easy button to push by accident. I would not have designed the remote like that. I hope this helps.
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