I have an ActivConnect G that will not show any video. I can tried different HDMI ports on the board and different cables and all I get is “No Signal.” I have rebooted the board and the ActivConnect and still nothing. When I plug the ActivConnect in I get the blue light so I know it is getting power. Is there anything else I can do to try and recover it? I looked the the device is still under warranty until August. Does it need to be replaced?