I have a home theatre setup with a retractable Stewart screen that comes down as the projector comes on (via a 3.5m trigger cable). My projector is off being repaired and I wanted to find a way to make the screen come down. Does anyone know of a method that I can "trick" the screen to come down. I thought maybe of buying a 3.5m socket and shorting the ends - is this an option. Any guidance appreciated.