Mine done same thing after a storm. I can get HDMI 1 to work as long as I'm using both 1 and 2 and both devices regardless of what device isvas long as they both on and both in ports then HDMI 1 will work and TV acts normal but you will lose signal if you unplug HDMI 2 or turn off device on HDMI 2. I hv no idea why this works or why it effects other port.