I just cant get the on screen display to come up on my Denon. It's about 3 years old and the OSD via phono worked fine until I connected a JS RGB to VGA box to my Panasonic th-50PHW30 a little while ago. I can get a signal with the phono Ok via Xbox, Sky or PS2 but still no OSD. I need to assighn a digital channel to a certain input that didn't have one before but cant without the display. Is there a way around this so I can do it via the front panel, cant see anything in the instructions? Or have I hit a button to disable the OSD?