I am having many sounds problems with my Bally Skateball where sounds are either missing or wrong. When I start again it makes what I believe is the “Slam” sound (sort or like an ambulance siren cadence) which continues until the ball is launched and hits a switch or target. The switches seem to all work properly but the 1-2-3 lanes make no sound nor do the “special” lanes. When the game finishes it does not play the familiar “game over” tune. Also the collect bonus does mind the winding score up sound when collect bonus is achieved. I have tried two different sound boards but still no resolution. I am thinking it is possibly something in the switch matrix or MPU. I appreciate any ideas on where to look. The game otherwise plays completely fine. Thanks. Mike