I've just received my Supergrafx today, mainly just to play Daimakaimura and eventually 1941 when I track down a copy. The console also came with another Supergrafx game Battleace. I've hooked the console up to my TV and firstly tried Battleace. Worked fine. Next I took my copy of Daimakaimura (which was brand new and sealed) and opened it up. Plugged the game in and all I get is a blank white screen. I've looked around a bit online and made sure the Supergrafx was set to "Mode 1" which as I understand is the required mode for Supergrafx games (either way, neither mode 1 nor mode 2 allowed the game to boot up). I also tried a couple of standard PC Engine games and those work fine. So at the moment I don't think its the console, as every other game seems to work and including another Supergrafx game. So at this stage I think its probably Daimakaimura, which is strange as the game is completely spotless, I'm quite stumped as to why it doesn't work.

Is there anything else I can try?