I updated my Emerson TV settings. Now my Apple TV first generation says that the support format out footage/video resolutions or refresh rate is not compatible.
I reset the Emerson TVs settings Dash now I cannot access the TV with my Apple TV one.
Your memory, I have no idea what you changed so I cannot advise what to change. Please identify your AppleTV, there are very few 1st generation Apple TV’s still alive, yours is likely a 2nd or 3rd gen. If the box is black it’s not a 1st gen.