Apple TV 4th generation operating advice

Trying to connect my 4th generation to a new tv.

Presumably you know how to connect the Apple TV box to the TV using HDMI?

Set up your Apple TV - Apple Support

Is the Apple TV box powered? Does its status light glow continuously?

If your Apple TV isn't working, won't turn on, or shows a black screen - Apple Support

… a new tv

What brand and model is that? In case it matters.

No response from control to box

Verify that the TV is set to take input from the HDMI port to which the Apple TV box is connected. You should be able to configure this in the TV settings (“Source” or ​“Input”).

This might be automated by turning on CEC on both devices:

For Apple TV: Settings﹥Remotes and Devices﹥Control TVs and Receivers﹥On

For the TV: See its manual. The TV may have a brand-specific trade name for CEC.