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Source changes unexpectedly | Bose Smart Soundbar 900
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. To disable HDMI-CEC functionality of the soundbar, which would prevent it from operating other devices or responding to operations from other devices, set the option to Off. For more info, see HDMI-CEC Power and Audio Settings.
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.
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