If you have Roku reboot it. I am finding a reboot of Roku has solved most of my problems including not being able to tune a channel. I was getting weird message saying it was forbidden. I reboot Roku and all is well.
And if you are using the Roku app, I’ve seen cases where the legacy app work when the new Roku app doesn’t. Or at least will give a more meaning error message.
I connected my antenna up to the TV last night so I could watch the football game. Left it that way all night. I reconnected it to the Tablo this morning and guess what? LiveTV is working again. ???
Sometimes once I’ve gotten an error on tuning, after tuning to 5 different stations it works. The tuner is trying to replay the problem instead of moving on.