I bought a STR DN1040 AV receiver on 29/12 and the HDMI pass through function is not working. I have control for HDMI set to ON and pass through Auto. There is no ON option only Off or auto! When I switch the receiver off the picture and sound from the TV comes through but after 20 secs there is a clicking noise from the receiver and the screen goes blank and also no sound. I called Sony and reset the receiver but still the same problem. I called back Sony and they said return the amp and get a new one. I did this but I still have exactly the same problem with the new receiver. I have checked and even changed the HDMI cables and changed the TV but the problem is still there. I have the latest firmware after an update. I am now seriously thinking of returning the amp and getting my money back. Does anyone have any ideas what the problem could be?. Thanks