I cannot get a signal on my tv

Welcome to the Apple community Listykooy.

You may wish to try the following:

Press and hold the menu and the up button simultaneously on the remote for six seconds, the Apple TV should then begin to cycle through the various resolutions available to it at 20 second intervals.. If you see a picture appear up on your screen, use the remote to scroll down to the OK option and select it.

Great this solved my problem thanks