Solved! How do i disconnect from youtube?

Jun 28, 2019
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I apologize if this is the wrong place to ask, but...
A friend showed me how to cast a youtube video to my vizio tv from my iphone. It worked great!
But I can't get it to disconnect! I turn the tv off and back on and the tv reconnects and youtube is soon playing on hdmi2.
I reset my router, but when it comes back up my vizio reconnects and continues to show youtube.

How do I get the tv to stop connecting to youtube?
Thanks in advance for any help you can give.
-Fred
 

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