thank you all so much for your responses i actually think you are all correct as what you are saying makes so much more sense. You have no idea how your posts have helped calm me this evening i really was thinking of cancelling it all as how in gods name would i survive the journey without it. in my 12 weeks since getting the scs it has been on 24/7 and not once has the power off button been pressed. well the airline are due to get back to me in the next few days so i guess hopefully this will turn out better. I had to send the airline pics of my unit yesterday which i thought was a bit funny . hoping my lovely scary blue wires will get me bumped to first class!!