Pressing * 4 Times Quickly worked the first time I tried it. A quick fix for us.
Working on getting CC to work on our home theater 65" M series Vizio TV sets. Closed Caption works on 2 other television sets we have in other rooms where we are using Fire Ultra setups. Using Prime, Hulu and others.
There is a voice that reads the menu. It just started recently and I want to shut it off. I have a standard remote and not a voice activated one. Everything I have seen refers to voice activated remotes.
This is called Audio Guide, and it can be found in the Settings menu under Accessibility. You probably accidentally activated it by hitting the * button four times quickly. You can turn it off the same way, and you can completely disable it in the menu I mentioned above.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Ultra (4800), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.