I just purchased an onkyo tx-sr606 receiver. I am running two hdmi cables into it(from a blue ray and HD cable box) and a HDMI to DVI into my mitsu TV. If the TV is off I get sound through the receiver, if I turn the TV on I get no picture and no sound, if I turn to a non HD channel I will get a picture(480i) but no sound. I just replaced my HDMI to DVI cable but that did not help. Anyone have any advice?