Tries tv and those cable or satellite boxes unplug,replug it back like about an hour later for those pay boxes to reboot and upgrade it softwares and for the tv to do a resetting itself back to factory setting,now go into the tv menu go to Audio setting tries resetting all back to the factory setting.By doing these steps.These steps,will help and have a great chances for ur tv to have it audio back for tv stations channels broadcasting reception.
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