When using an HDMI connection between the unit and the TV, sound is sometimes not output.

Depending on when this symptom occurs, try the following.

If there is no sound output after the power is turned on

Turn off the unit, and wait approximately 1 minute before turning the unit back on.
If the issue is not resolved, turn off the TV, and wait approximately 1 minute before turning the TV back on.

If there is no sound output after operating the TV channels or a connected player

If the input of the unit switches to OPTICAL when operating another device, sound from the TV will not be output.
In this case, select MENU - AUDIO - TV AU on the unit, and change the setting to HDMI.

NOTE: For details on operation method, refer to the manual.