For what it's worth, my Turbografx Express really doesn't work too well. It only works when the AC adapter is plugged, and the the chord has to be held in exactly the right position by tape for it to stay on. Sometimes if I move in just the wrong way while playing, the system just shuts off. I love the Turbografx though. Final Lap: Twin and the Bonk games brought my hours of joy as a kid.