CASIO fx-3600P scientific calculator from 1985

[jebem]

(05-22-2018 09:49 AM)toml_12953 Wrote:  

(02-02-2017 12:34 PM)boeman Wrote:  I have occasionally had to clean the PCB button contacts with IPA to restore button key press sensitivity.

How does India Pale Ale (IPA) fix it?

ok, I know you are making a joke, but here is what IPA means in the context of what we do to repair/clean these calculators, to the benefit of other members unfamiliar with it:
IPA = Isopropyl alcohol