Apple TV (2nd generation) - Manual (Page 28)

28 Chapter 4 Problem? No Problem. Chapter 4 Problem? No Problem.
If your TV screen appears fuzzy or black
 Make sure you’re using the correct HDMI cable and that it’s connected firmly
to Apple TV and to your TV.
 Make sure the input setting on your TV matches the input port the HDMI
cable is connected to. For information, see the documentation that came
with your TV.
 Make sure your HDTV supports 720p video.
If you can see a picture but Apple TV isn’t responding
 Hold down Menu on the Apple Remote to return to the Apple TV main menu.
 Make sure your TV is turned on and functioning properly. For information, see
the documentation that came with your TV.
 If you paired an Apple Remote with Apple TV, make sure you’re using the paired
remote. See “Pairing Apple TV with a Remote” on page 21.
 Reset Apple TV by doing one of the following:
 Hold down both Menu and Down on the Apple Remote until the Apple TV
status light blinks rapidly.
 Disconnect Apple TV from the power outlet, wait about five seconds,
and then reconnect it.
 Choose General > Reset Settings from the main menu on Apple TV.