I've seen ROKU box questions connected to stand alone tv's but my JVC is ROKU enabled, 4k.
Everything works, all selection screens, ads, banners, etc. When I attempt to actually watch a movie, YouTube video or Amazon Prime selection, AUDIO is fine but I have a completely BLACK screen!
The settings to 720 should NOT be an issue as the set is configured to auto select resolution.
What am I missing. Set is DAY 1, brand new.