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You want to output sound from both the headphones/Bluetooth audio device and the TV speakers.
You are concerned about a delay between the picture and sound.
[129] Troubleshooting | Sound
No sound but good picture.
Check the volume control.
Press MUTING or VOL + button to cancel muting.
Press the ACTION MENU button, then select [Speakers] — [TV speakers].
If it is set to [Audio system], the TV speakers only output key tones or system sounds.
Related topics
No audio or low audio with a home theater system.
[130] Troubleshooting | Sound
Audio noise.
Make sure that the antenna is connected using a high quality 75-ohm coaxial cable.
Keep the antenna cable away from other connecting cables.
To avoid TV interference, make sure to use an undamaged antenna cable.
Related topics
Distorted sound.
[131] Troubleshooting | Sound
No audio or low audio with a home theater system.
Press the ACTION MENU button, then select [Speakers] — [Audio system].
Set [Headphone/Audio out] to [Audio out (Fixed)] in the [Sound] setting.
If the audio system is not compatible with Dolby Digital or DTS, set [Settings] — [Sound] — [Digital
audio out] to [PCM].
Depending on your model, if [Speakers] is set to [TV speakers] and [Hi-Res upscaling (DSEE HX)]
is set to [Auto], DIGITAL AUDIO OUT (OPTICAL) is muted.
Set [Digital audio out volume] to Max in the [Sound] setting.
When using HDMI input with Super Audio CD or DVD-Audio, DIGITAL AUDIO OUT (OPTICAL)
may not provide an audio signal.
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