I know this comes up a lot but please help me out if you can. I have connected my DVD player and Sky box to my TV using Scart leads. My Sky box power is on all the time. As I understood it when I powered up my DVD player it should signal that it is on and the TV should automatically switch to the DVD signal... Problem is, it doesn't. My Scart leads are fully connected. Is there anything I should check or do I have it all wrong??? Thanks.