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Bose Smart Soundbar 300

Sold from 2020 – present

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Sound input source changes unexpectedly

If the audio you are listening to from your system changes to the audio from a different device connected to your system on its own (i.e. changing from TV sound to an AUX device), try the following:

In the menu of the connected device, try disabling HDMI-CEC.

CEC (Consumer Electronics Control) allows devices to send control information (e.g. power, input switching, remote control, etc.) back and forth over HDMI. CEC implementation and capabilities can vary among different brands, which can cause various control issues. Try disabling CEC in the menu of the connected device, then try again. Depending on the brand, CEC may be labelled differently in the device menu. For more info, see Names used by different brands for CEC.

Check the HDMI-CEC setting of your product.

CEC (Consumer Electronics Control) is a feature that allows devices connected via HDMI to communicate with each other. However, since there are a variety of brands and models of HDMI devices, sometimes devices may not communicate as expected. For issues with audio, video, or remote control operations when using HDMI connections, try selecting a different Advanced CEC option in the Settings menu of the soundbar within the Bose app icon. To disable HDMI-CEC functionality of the soundbar, which would prevents it from operating other devices or responding to operations from other devices, set the option to Off. For more info, see Turning HDMI-CEC on or off.

Reset the TV.

Electronics may need to be reset from time to time—much like rebooting a computer. Disconnect power from the TV for 30 seconds, then wait for it to start up.

Reset your product.

Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more info, see Resetting your product.

Your product may need service.

If the steps provided do not resolve your issue, your product may need service. Follow the link below for more information on how to service your product. Depending on your product and region, you will be provided a contact number or the ability to setup service online.

Click here to start service
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