. Check whether the Digital Output Audio Format is set to Dolby Digital+ If you are using a receiver that does not support Dolby Digital Plus, you will hear no sound when you select Dolby Digital+ Settings Sound Expert Settings Digital Output Audio Format Dolby Digital+ Run Start Sound Test Settings Support Self Diagnosis Start Sound Test Make sure that the audio cable is connected to the correct audio output connector on the external device. For antenna or cable connections, check the signal information