I have a Roku Premiere that has been working great.
All of a sudden, when I turn on my television, the Roku logo comes up on the screen, and then the screen identifies the display size, and stays black after that and then turns to static. I then just unplug the hdmi cord and it displays the correct home screen. I've tried changing the hdmi cord, and it happens the same. I haven't messed with any of the display settings, and the tv outputs 2160.