have you tried to adjust your volume pots? sometimes this will fix the problem. you may have already read this but if not it may help. good luck! http://www.pinrepair.com/sys11/index3.htm#sound
I rotated the pot on auxilary soud board and the pot in coin door. Reseated one sound chip on auxilary board and the sound came back.
Good for now. Thanks for the help.
David