Ok, i would take detailed pics of every wire and screw, take the board and any coils and get a large rubbermaid drum and submerge them in distilled water and gently shake them well...
Very well...
Then soak them down in 99%isopropyl well, then blow dry them.
Next any caps, source replacements, swap in new.
Very well...
Then soak them down in 99%isopropyl well, then blow dry them.
Next any caps, source replacements, swap in new.