I got a Pioneer 757 last week and I have just noticed a problem with the picture. When the output is set to RGB there is a grey band / lightening at the top of the screen. This is very noticeble during dark scenes or with films in 2.35 : 1 on the top black bar. It happens with all discs and the player is connected to the TV into a RGB able scart socket. I have tried my old player, no problems at all. Its also ok if I set the output to video or s-vhs. Any ideas or have i just got a dud?