AppleTV light blinks as apposed to continuously on. Unable to restart using down/menu button. Apple logo however is on the screen!
Apple TV
Posted on Mar 25, 2015 4:47 PM
Q: AppleTV light blinks when plugged in. Unable to restart with menu/down buttons.
Apple TV (2nd and 3rd generation): Restoring your Apple TV - Apple Support
This is generally the resolve to those symptoms.