Please Change Audio Setting on Your TV if TV is the source Audio Device
Note: Not support Dolby digital or DTS audio format, audio setting for your reference:
If not TV, homepage--system setting--image and sound---voice setting--digital audio output--PCM/LPCM.
If Samsung
1. Press the settings or menu button on the remote control.
2. Move down and select the “Sound” menu. Choose “HDMI Input Audio Format” and select “PCM”.
3. Choose “Digital Output Audio Format” and select “PCM”.
4. Optional - Choose “Sound Output” and select “Audio Out/Optical”.
If Vizio
1. Press the settings or menu button on the remote control
2. Move down to the “Audio” menu
3. Choose “Digital Audio Out” and select “PCM”.
*This may reside under expert settings
4. Go back and choose “Surround Sound” and select “off”