Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Sounds like you may be powering the Roku device from your TV's power port if the Roku logo appears each time you power up TV. Try powering directly from the Wall Adapter that came with the device and see if that cures both your issues. (An underpowered power supply may also be causing the sound issue you are experiencing.)
Roku Community Streaming Expert Just another Roku user... I am not a Roku employee. Insigna RokuTV, Ultra 4660x, Premiere+ 3921, Express 4k+ 3941