To fix this, simply navigate to the audio settings on your device and select the optical audio as the default output. Another configuration issue can arise from outdated or incompatible audio drivers. HDMI-CEC handles that for HDMI cables, but for optical, you must pick up the soundbar remote and press “Input” or “Source” until you see “OPT,” “DIGITAL,” or “D-IN” on the display. Original content by hifireport. TV Audio Output Setting Errors If the cables are connected and the correct input. If you are dealing with LG TV no sound through receiver, the problem is usually caused by a connection, format, or settings mismatch rather than a failed speaker system. For an audio extractor, connect the TV's HDMI output to the extractor's input, and then connect the extractor's optical output to your sound system. NOTE: Because each of these steps represents a possible solution to this issue, check the. Optical audio is a popular method of transmitting high-quality audio signals through a digital connection. If the video doesn't contain.
