Quoted from jjoravec:I have a Diamond Lady that i put all new boards in including sund board, but I am getting no sound only a hum from the speakers. I even replaced the speakers with new ones.
Any idea what could be wrong or where to start tracking down the problem?
Have you verified you have exactly 5V (or a little over) on the mpu? If you're not, you can have sound issues. I know because I just had the problem on an 80b game. I was getting 6.5v and the pot on the power supply was not functioning at all. Put a new one in and the sound works perfectly now.