As you may or may not know the HDMI is a standard that is not finalized. If your H20-600 doesn't drive your tv's HDMI you need to make note of that in the CE Forum listing the make model of your tv as well as the DTV unit. Does your component cable input work? I would also try to restart the receiver with the TV in the on position and the HDMI active. Maybe you are not getting the required handshake from the tv. Make sure the TV is on first before restarting the receiver. Have you contacted the manufacturer of the tv and see if they have a firmware update to there tv? Why is this the only place that people complain about HDMI? Shouldn't the TV manufacturer be responsible also? I know you said the dvd worked. But your tv manufacturer can possiby provide some answers.