I have started having issues with my AV receiver which keeps losing picture and sound on the tv. The display on the receiver seems to go blank momentarily and when it comes back it has lost the input signal. It can then be quite tricky to get it to recognise it again. The issue happens on both the Sky HD box and also the Blu-ray player. If anyone has any ideas then I would be very grateful as my wife is starting to lose the plot with it. Many thanks