I'm thinking of washing the whole PCB with https://www.jaycar.com.au/pcb-and-parts-wash-cleaning-solution/p/NA1070 and then giving it a coat of https://www.jaycar.com.au/circuit-board-lacquer-spray-can/p/NA1002. I'll clean the shielding and perhaps treat it with some Evapo-Rust before also giving it a protective coating (contact cleaner or similar). Does that seem reasonable? #RetroComputing #VintageMac