Hello
I have my parents on a very simple setup.
One 4 tuner hd homerun. two appletvs.
Not to long ago a issue started that if TV (a) watches anything over the air, TV (b) cant watch any channels. Every channel comes up with error.
Streaming to the tuner failed. Press play to try again..
If you close out of Channels on TV (a), then TV (b) will start to tune to channels again.
Thanks

