Good afternoon,
My name is Lauren, and I am attempting to learn how to work on Bally Sound Boards. The type pictured came from a Bally Playboy, and that's the era I'll be working on. I have the manual page for the sound module, so I have the basic description of how each chip on the board works. What I wanted to ask for was a guide on typical issues on these sound boards, common parts that need to be replaced, and where I can find a more detailed description of what each chip does. I have an electronics background from college but I don't have much physical PCB work experience. Any help on getting started with this would be much appreciated. Thank you.