Firestick - tuner not found

We have a firestick 4k on our bedroom TV that we watch for a couple hours at most at night.

I've started getting a "tuner not found" when we change channels after watching for about an hour. When I go to my pc (which is the channels server) and go to watch or change channels they all work normally.

I thought it might be a cache problem so I went and cleared the cache for the Channels app and presto, it works again.

Anyone have an idea how to fix this, other than clearing cache every time it happens? My main device in the FR is a shield and it's never happened on that.

Any ideas?

under Settings > Support > About what version number is shown

next time it happens can you click Settings > Support > Submit Diagnostics then post here when it finishes uploading

Version 4.6.3

Will do. It's happened twice in a couple of weeks. Just cleared cache last night so it might be a bit before it happens again, but will submit (actually just did that now by mistake) when it happens again.


Just happened again and I submitted diagnostics - other. Let me know if you figure out what's wrong. If I don't hear anything I'll clear cache tomorrow. Thanks for the help.

What exactly happened again? What isn't working?

I see this error in your logs:

2023/09/09 15:10:23.453736 [ERR] Failed to start stream for ch6140: TVE: notAuthorized: The ESPN networks are no longer part of your video lineup. Don't miss College Football, Monday Night Football, MLB, NHL, NBA, SportsCenter and more. Get ESPN Back: Go to for more information.

Wife was watching 67.6 WBBZ and the picture went black and said tuner not found. Send diagnostics and was able to go back and watch it.

This happened a few months ago when I posted. Cleared cache and it worked fine for almost 3 month.

Since you didn't see any error for that channel at about 10:30, I'll clear the Firestick Channels cache again. Probably should do that more regularly or look for a app that will do it for me. I have a Shield on my main TV and have never had a problem. The shield is a much better streamer with more storage and memory than the stick.

Thanks again.