I went visiting relatives yesterday, and came away with a snes that someone had left there at some stage. I know absolutely nothing about these things, anyway I plugged it all in but it doesn't seem to work. The tv shows a black screen. There is red light on the top of the unit. The game cartridge is in, although it makes no difference either way. My question, is there something I haven't done, or is the unit stuffed? The game (it only had one) is called Donkey Kong Country.