My spare SNES deck works, but any game I plug in comes up with flawless sound, but all the graphics are garbled. Looks like the items are where they belong, just all garbaged up. Anyone have any ideas? I know it's not the games, tried 3 or 4 and all load beautifully the first time, every time on my other system. Used all the same cables, so the problem is definitely the console. Thanks for any/all help!!