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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 [Audio output] setting.
  • If the audio system is not compatible with Dolby Digital or DTS, set [Settings] — [Display & Sound] — [Audio output] — [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.
  • Check if the [Digital audio out volume] setting of the TV is at maximum.

    Press the HOME button, then select:
    [Settings] — [Display & Sound] — [Audio output] — [Digital audio out volume]

  • When using HDMI input with Super Audio CD or DVD-Audio, DIGITAL AUDIO OUT (OPTICAL) may not provide an audio signal.