Excellent advice on Deoxit!
Very useful for troubleshooting intermittent problems, obviously the hardest type of problem to resolve.
Deoxit, and other products from Caig Labs, are the real deal. Fantastic products. I did component level repair of circuit boards for 20 years. I learned of Caig Labs from my father, a lead repair engineer for Tektronix. Worth every penny.
Side note: worked like a miracle for noisy/scratchy Stratocaster pickup selector switches😊