Hi I have an xbox 360 & panasonic dmp bd-80 blue ray player connected to my onkyo tx sr606 amp using a Samsung plasma TV. All via HDMI. When I choose the blue ray player the amp takes a long time to correctly identify the signal. The display will flash up with the found signal & then go off and check again this will happen several times a usually takes a good few minutes before the amp settles down with a signal. The xbox 360 is the same but no where near as long. Any other input other than hdmi is fine. Is this meant to happen ?