If your Bose soundbar is connected to an LG TV but you get no sound, the problem is usually a setting, cable, or handshake issue—not a broken speaker.
This guide walks through the most common causes and the exact fixes that restore audio fast.
Why a Bose Soundbar with an LG TV Can Show No Sound
LG TVs and Bose soundbars commonly communicate through HDMI ARC, eARC, optical audio, or Bluetooth.
When the TV and soundbar disagree on audio format, input source, or control settings, the result is often silence even though both devices are powered on.
The issue can affect popular Bose models such as the Bose Smart Soundbar 600, 700, 900, Bose TV Speaker, and older SoundTouch systems, especially when paired with LG OLED, NanoCell, or QNED TVs.
Start with the Fastest Checks
Confirm the soundbar is actually selected as the output
On your LG TV, open the Sound settings and verify that the audio output is set to the Bose soundbar, not the TV speakers.
If the TV is still outputting to internal speakers, the Bose unit may appear connected but remain silent.
Raise the volume on both devices
It sounds basic, but low volume or mute on either the TV or soundbar can mimic a failure.
Increase volume on the Bose remote, LG remote, and the soundbar itself if it has onboard controls.
Check the input on the Bose soundbar
Make sure the soundbar is set to the correct source.
If it is expecting optical audio but the TV is sending signal through HDMI ARC, no sound will play.
Verify the Physical Connection
Use the correct HDMI port
For HDMI ARC or eARC, the LG TV must be connected to the HDMI port labeled ARC or eARC.
On many LG models, this is HDMI 2 or HDMI 3, but the label matters more than the number.
Reconnect the HDMI cable firmly
Loose HDMI connections can interrupt the CEC handshake between the TV and Bose soundbar.
Unplug both ends, inspect the cable, and reconnect securely.
Try a high-speed HDMI cable
For eARC setups, use a certified High Speed or Ultra High Speed HDMI cable.
Older or damaged cables may pass video but fail to carry stable audio.
Test optical audio if HDMI fails
If your Bose soundbar supports optical input, switch temporarily to an optical cable.
This can help isolate whether the problem is with HDMI ARC settings or the soundbar itself.
Check LG TV Audio Settings
LG TVs have multiple audio options that can block external sound if misconfigured.
Review these settings carefully.
- Sound Out: Set to HDMI ARC, Optical, or External Speaker, depending on your connection.
- Digital Sound Output: Try Auto first, then test PCM if there is still no audio.
- eARC Support: Enable this only when both the TV and Bose soundbar support eARC.
- SIMPLINK (HDMI-CEC): Turn this on so the TV can control external audio devices properly.
If the Bose soundbar is connected by HDMI ARC, the TV’s Digital Sound Output setting is especially important.
Many users resolve the issue by switching from Dolby Digital or Pass-Through to PCM for compatibility testing.
Adjust Bose Soundbar Settings
The Bose app or the soundbar’s setup controls may also affect audio behavior.
Open the Bose Music app if your model supports it and confirm that the soundbar is updated and paired correctly.
- Verify the soundbar is connected to the same Wi-Fi network if app control is required.
- Check for firmware updates in the Bose app.
- Confirm that the selected source matches the cable type in use.
- Restart the soundbar from the app or by power cycling it.
Some Bose soundbars also remember the last input used.
After switching cables or changing TV settings, manually select the correct input again.
Power Cycle Both Devices
A full power reset often fixes an HDMI or CEC communication failure.
This is one of the most effective fixes for Bose soundbar with LG TV no sound problems.
- Turn off the LG TV and Bose soundbar.
- Unplug both devices from power.
- Disconnect the HDMI or optical cable for 60 seconds.
- Reconnect the cable securely.
- Plug both devices back in and power them on.
- Test audio from a streaming app, TV channel, or external input.
This process clears temporary glitches in the TV audio subsystem and resets the handshake between devices.
Test the Audio Format
Not every LG TV and Bose soundbar combination supports every audio codec equally well.
If the TV is sending a format the soundbar cannot decode properly, you may get silence.
For troubleshooting, set the LG TV audio output to PCM.
PCM is the most widely compatible format and is often the best test setting when sound is missing.
If sound returns in PCM mode, the issue is likely related to Dolby Digital, DTS, or pass-through compatibility.
Also note that some Bose soundbars handle Dolby Digital better than DTS, and many LG TVs can output audio formats differently depending on the app or source.
Streaming apps like Netflix, Disney+, and Prime Video may behave differently from live TV or a game console.
Disable Conflicting Devices and Features
Other connected devices can interfere with the audio path.
Receivers, game consoles, streaming sticks, and sound settings on Blu-ray players may affect what the TV sends to the Bose soundbar.
- Disconnect extra HDMI devices temporarily.
- Turn off Bluetooth audio on the TV if it is connected to another device.
- Disable internal TV speaker enhancements or multi-output audio if enabled.
- Check whether the soundbar is paired to another TV or device nearby.
LG TVs may also use auto-detection features that switch outputs unexpectedly.
Reconfirm the output after any input change.
When Bluetooth Is the Connection Method
If your Bose soundbar is connected to the LG TV over Bluetooth, no sound can happen if pairing is incomplete or the connection drops.
Bluetooth is more prone to delays, interference, and device switching than HDMI ARC.
For better reliability, HDMI ARC or optical is preferred.
If you must use Bluetooth:
- Remove the Bose soundbar from the LG TV’s paired device list and pair it again.
- Keep the soundbar close to the TV during setup.
- Disconnect nearby Bluetooth speakers or headphones.
- Restart both devices before repairing.
Signs the Problem May Be Hardware-Related
If all settings are correct and the Bose soundbar still produces no sound, the cable, port, or soundbar hardware may be the cause.
Watch for these warning signs:
- The soundbar never shows an active input response.
- Audio works briefly and then cuts out.
- Only one app or source produces sound.
- The HDMI ARC port on the TV feels loose or unresponsive.
- The soundbar does not respond to different cables or inputs.
At that point, test the soundbar with another TV or device, or test the LG TV with another sound system.
That comparison quickly identifies whether the fault is in the TV, cable, or soundbar.
Best Practices to Prevent Future Audio Dropouts
Once sound returns, a few setup habits can reduce the chance of the issue coming back.
- Use HDMI ARC or eARC instead of Bluetooth when possible.
- Keep LG TV firmware and Bose firmware updated.
- Use one primary audio format setting instead of constantly switching between codecs.
- Avoid unplugging HDMI cables while devices are powered on.
- Label the correct ARC port so it is not confused with standard HDMI inputs.
For most Bose soundbar and LG TV setups, stable audio depends on the combination of the right port, the right output setting, and a reliable HDMI cable.
Once those three elements are aligned, no-sound problems usually disappear and stay gone.