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.
I've scanned broadcast channels. After scanning for local channels, for example, I will watch Fox, switch to another channel, try to switch back and the channel is gone. It might come back later. Also, Roku TV we bought won't let you manually put in channel.