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I don’t believe you can enable cec control unless the soundbar is plugged in through the ARC HDMI port. But you might want to check in settings > system > control other devices (CEC)
Sorry, there was a problem. Please try again later.In order to do this you would need to go into the settings and set up CEC functionality. You can visit https://support.tclusa.com/23507-roku-tv/connecting-a-sound-bar-to-your-tv-using-arc for more information. Thank you, TCL Customer Support
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