No More Noise: Solutions for Vizio Sound Bar Buzz When Connected to Roku TV


How can I resolve the persistent buzzing noise from my Vizio SB2020n sound bar when connected to a Roku TV via an auxiliary cord, considering that optical and HDMI connections are not viable options? Additionally, when attempting to use a USB cord, no sound is transmitted. Is it possible that Roku TVs do not support audio output through USB ports? The sound bar functions flawlessly when connected to my phone via Bluetooth.


If you’re experiencing a persistent buzzing noise when your Vizio SB2020n sound bar is connected to a Roku TV via an auxiliary cord, and you’re unable to use optical or HDMI connections, here are some steps you can take to troubleshoot and potentially resolve the issue:

: Ensure that the auxiliary cord is properly connected to both the sound bar and the TV. A loose connection can sometimes cause a buzzing noise.


Inspect the Auxiliary Cord

: Examine the cord for any signs of damage or wear. If the cord is frayed or damaged, it could be the source of the buzzing noise. Try using a different auxiliary cord to see if the issue persists.


Power Cycle the Sound Bar

: Unplug the sound bar from the power source for at least 5 seconds and then plug it back in. This can sometimes resolve minor electronic glitches that may cause noise.


Factory Reset the Sound Bar

: Refer to the user manual for instructions on how to perform a factory reset on your Vizio SB2020n sound bar. This will return the sound bar to its original settings and may eliminate the buzzing noise.


Check for Interference

: Other electronic devices can sometimes cause interference that results in a buzzing noise. Try moving other electronics away from the sound bar and TV, or unplugging them to see if the noise stops.

Regarding the use of a USB cord for audio output, Roku TVs typically do not support audio output through USB ports. The USB ports on Roku devices are intended for connecting storage devices like USB sticks or portable hard drives to play media files, not for auxiliary audio output. Therefore, attempting to use a USB cord for audio transmission from a Roku TV to a sound bar will not work as expected.

It’s worth noting that the sound bar functions correctly when connected to your phone via Bluetooth, which suggests that the sound bar itself is functioning properly. The issue likely lies with the auxiliary connection or the Roku TV’s audio settings.

If you’ve tried all the above steps and the buzzing noise still persists, it may be time to consult with a professional technician or reach out to Vizio’s customer support for further assistance. They may be able to provide more specific guidance based on your particular model and setup. Remember, maintaining a clean and secure connection between your devices is crucial for optimal audio performance..

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