My Pioneer has all of a sudden stopped automatically sensing whether it's receiving a wide screen picture or not and as such has stopped auto changing the perspective. In addition, simply by using the Sky remote to turn Sky on and off it would automatically select the Sky input. Now I have to select the input manually? I'm using a high quality scart lead that hasn't budged at all so what can it be? In Sky+ there's a scart sensing option in System Set Up and it's 'ON' as it always has been. Any ideas?