What kind of equipment would I need to diagnose an Italian Electric piano?

roughshawd

Jul 13, 2020
616
Joined
Jul 13, 2020
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616
I have found some very scary things in this electronic piano. Loose wires, cut board traces, chips that I can't find datasheets for, and oddly enough, most of it worked when I got it! I can't find a manual, but I did find a schematic, and thats all I should need.. right. ok
I re-connected all the cut traces(there were three of them), and re-attached two free wires. I need some background on how these do sound generation, and what to look for... I am getting upset over nothing! any good primers or anything that might help a soon to be senior citizen understand 1973 professional audio equipment?
 
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