one interresting thing to meantion about the snes power supply is that the original adapter is a AC/AC adaptor but due to some flaw in design it dont work as it should on some consoles when running some games or speciall hardware like a superwildcard dx2 or yoshi's island. if you get flickering (or you can se it "walk" on the screen get a new powersupply a AC/DC supply 9-35V (this is the tolerance of the 7805 stabilizer thats inside of the snes) where middle peg should be negative (-) for NTSC consoles and possitive (+) for PAL consoles. (dont know why but nintendo made a faze shift due to some reason.)