New Life Games Tech Forums

I have a Bally S 6000 with a sound problem. It is a Bonus Frenzy 4 reel machine. When you turn on the machine on the first spin no sound. Than on the next 5 spins you have sound. After that you have no sound while reels spin. You always get the coin drop sound but no music when the reels spin. I have changed all the chips the mpu board and the sound board. I still have the same problem. I installed the mpu board in another machine and all is fine.The chips that were in the game are 9042 U18 and U20. I installed another set of chips 9574 and had sound but the reel strips did not match the game. Does any body know what reel strips go with those chips. Anybody have this type of problem before. I can use any help you can give.Thanks