Is this a new problem, where it was working and now it's not? Or did you get it this way? Your sound simm on an igame should be a DSS simm. As mentiined, try cleaning it with a pencil eraser and see what happens, although the igame may have a sound test option in the menus that would let you test the different sounds to see if they are available from the chip. If they are then you probably have a settings or software issue related to one of the other chips. Some of this is guesswork as I have limited knowledge of the igames, but give it a try