If your soundbar volume is low or there is no sound, confirm the TV audio output setting, verify the cable or Bluetooth connection, and (if supported) set up Universal Control and SIMPLINK (HDMI-CEC) so the TV can send audio correctly and control the soundbar.
This issue is usually caused by an incorrect TV sound output selection, an incomplete device connection (HDMI ARC Optical Bluetooth), blocked remote control signals during Universal Control setup, or HDMI-CEC settings that prevent power volume synchronization.
If the TV is still outputting sound to its internal speakers (or to a different audio device), the soundbar may be silent or very quiet.
A loose cable, the wrong TV port, or Bluetooth not being paired can prevent audio from reaching the soundbar.
If the soundbar is too far from the TV or the IR receiver is blocked (for example, inside a cabinet), the TV remote may not control the soundbar volume power even after setup.
When HDMI-CEC is disabled, turning the TV off may not turn the soundbar off, and some HDMI control features may not function.
Setting: Home > Device Connector > Sound Bar
1) Press the Home button on the LG remote.
2) Open Device Connector, then select Sound Bar.
3) Choose your connection type:
- HDMI ARC: Connect the soundbar to the TV’s HDMI (ARC) port using an HDMI cable.
- Optical: Connect an optical cable between the TV and soundbar.
- Bluetooth: Put the soundbar into pairing mode, then select Bluetooth on the TV and choose your soundbar from the search results.
4) After connection, confirm the soundbar is powered on and set to an audible volume.
Setting: Settings > All Settings > Support > Sound Self-diagnosis
1) Press the Settings button on the remote.
2) Open All Settings > Support > Sound Self-diagnosis, then run Sound Test.
3) If you do not hear the test sound from the soundbar, re-check the connection type (ARC Optical Bluetooth), the selected input on the soundbar, and the TV’s sound output selection.
Setting: Settings > General > External Devices > Universal Control Settings
1) Turn on the soundbar.
2) Open Universal Control Settings and select the HDMI port connected to the soundbar (if applicable).
3) Select Manage Settings, then Start Setting, and follow the on-screen instructions.
4) During the remote test, check power and volume.
5) If the soundbar does not respond, try a different Remote Type option and repeat the test.
Note: Some models or some non‑LG soundbars may not support Universal Control.
Setting: Settings > General > External Devices > HDMI Settings > SIMPLINK (HDMI-CEC) > On
1) If your soundbar is connected via HDMI ARC, open HDMI Settings.
2) Set SIMPLINK (HDMI-CEC) to On.
3) Power-cycle the TV and soundbar, then test whether turning the TV off also turns the soundbar off.
Note: Power sync behavior can vary by soundbar model.
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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