Help! Just connected up an Arcam DV79 to the media box of my Pioneer 50HDE with an HDMI cable and....Nothing! According to the back of the media box this should be input 3. But you press input 3 on the remote and.....nothing. I've connected the Arcam to the media box with a Scart lead and that works fine. I've then set the output priority to HDMI in the setup menu on the Arcam DV79 but still nothing. I've but am in desperate need of help.