If your LG TV is connected to a soundbar, speaker, or home theater system but you hear no sound, confirm the connection type and select the correct Sound Out option for that connection. Also verify the external device volume and power.
This issue is usually caused by an incorrect audio output selection, a muted/low-volume external device, or a mismatch between the connection method and the selected Sound Out option.
If Sound Out is set to TV Speaker while a soundbar is connected, the soundbar may stay silent. If Sound Out is set to an external device that is not currently connected, you may hear no sound at all.
Even with correct TV settings, the soundbar/speaker can be muted, set to volume 0, or switched to a different input (for example, not set to HDMI ARC or Optical).
Some HDMI ARC setups require SIMPLINK (HDMI-CEC) to be enabled for audio to route correctly to the external device.
Turn on the soundbar/speaker and raise its volume.
Make sure it is not muted.
If the device has an input/source button, select the input that matches your connection (for example, HDMI ARC/eARC or Optical).
Setting: Settings > All Settings > Sound > Sound Out
Open the TV settings and go to Sound Out.
Select the option that matches how your external device is connected (for example, HDMI(ARC) Device for HDMI ARC, Optical for optical cable, or Bluetooth/Wi-Fi for wireless connections).
After changing Sound Out, play content and confirm audio is coming from the selected device.
Setting: Settings > General > External Devices > HDMI Settings > SIMPLINK (HDMI-CEC)
Set SIMPLINK (HDMI-CEC) to On.
Then set Sound Out to the HDMI(ARC) Device option.
If sound still does not play, power off both the TV and the audio device, then power them back on and test again.
If the menu names or layout differ from the steps above, your TV may be running a different webOS version.
On many models, you can open a quick settings/information view and confirm the webOS version, then follow the closest matching menu path available on your TV.
If the steps above did not resolve your issue, please visit the LG Electronics Support website. You can chat with our virtual assistant or schedule a service repair for further assistance.
※ Please note that service fees may apply for engineer visits if your product is out of warranty.
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