What to Check First
- “Anyone having issues with the sub cutting out? I notice somewhat often that the light on the sub turns on and off. Is this a result of losing power, or connection to the soundbar?”.
- “I am having this issue too. The subwoofer is sitting 2 feet directly under the soundbar with nothing in between and it fades in and out like waves. Like every 2 seconds. In then out then in then out, etc.”.
- “Thanks for letting me know I am not the only one with this frustration. I moved my wireless modem which was placed next to the subwoofer. Set up looks messy on my living room but it seems to have worked. Moved it about 3ft away. Hope this helps someone. I love my music loud. But yes...next time will not go wireless.”.
- “I had the same problem and can confirm that it is the Wi-Fi that is interfering with the subwoofer. I had the Wi-Fi modem sitting right on top of the subwoofer and when I moved the speaker away from the Wi-Fi it worked flawlessly.”.
- “I had the same problem and I fixed it quickly with the help of an LG representative on a chat line. Basically, you need to reset the signal from the soundbar to the subwoofer. Unplug the soundbar then press the reset button at the back of the subwoofer and hold in for 10 sec. Release the button then wait 30 sec. Plug the sound bar back and that should fix your problem. It did mine.”.
- “I was able to fix this issue. I have an LG TV and LG Soundbar. First, go to TV settings > All Settings > Sound > AV Sound Adjustment and turn it On. Exit out of that and the problem should be fixed. I hope this helps.”.
- "I moved my wi-fi extender which was connected to the same power outlet as the subwoofer and the problem went away.".
- Go to the LG website lg.ca.
- Go to the "Support Section" then to the "Software and Driver" section.
- Search your model name. Afterwards a pop-up should appear.
Why This Can Happen
Symptoms can have more than one cause, and the correct steps depend on the exact model, installation and operating conditions. Use the checks above to narrow the issue before service.
Safety and Model-Specific Guidance
Stop troubleshooting if you notice burning, electrical damage, unsafe heat, gas odor, refrigerant concerns, or water near electrical components. Follow the official LG USA instructions for your exact model.
Frequently Asked Questions
What should I check first for Audio cutting out?
“Anyone having issues with the sub cutting out? I notice somewhat often that the light on the sub turns on and off. Is this a result of losing power, or connection to the soundbar?”.
When should I stop troubleshooting and contact LG?
Stop if the product shows signs of electrical damage, burning, leaking near electrical components, or if the recommended checks do not resolve the issue. Use LG USA support for model-specific service guidance.
Does this guidance apply to every LG model?
Not always. Controls, error codes and service steps can differ by model. Confirm the exact model number and follow the linked LG USA article for model-specific instructions.
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