Welcome to the Roku Community and thanks for posting regarding your input tiles on your Roku TV.
Have you tried checking to see what your tiles are currently set to? Try accessing your TV inputs by going to Settings > TV inputs > Cable box and making sure that the HDMI 1 (ARC) is showing when you select the Cable box.
Please keep us posted what you find out and we will be able to assist you further.
Roku Community Moderator