I´ve got a neogeo AES home console with 5 carts but all games have little graphical glitches since the neogeo logo show up. To exemplificate on Art Of Fighting (game with most graphical erros) in game play all chars have little squares inside it. Samurai Shodown give mes wrong POWER bars, etc... Sound is OK btw...
What can be that? Any chip on mobo? All contacts and edges are clean....