Not sure if this is the right forum or not, apologize if not. The folks on this forum are rather intelligent, so I thought it may be a good place to get some info
I will be making a short run of some rather large PCBs that need to be waterproofed. They are 150x250mm boards, and there are 2 interconnected boards (same size) that are about 40mm apart.
After manufacture, I need to clean them for conformal coating (going with urethane).
The options I see are:
They seem more aimed at re-work cleaning, such as removing corrosion and such.
Possible damage to old ICs I have to re-use? Lots of conflicting opinions there.
Purpose built PCB washers
They obviously work well, but are stupid expensive. I can’t afford one.
Countertop residential dishwashers
Fitted to run on RO/DI water (need that for rinsing anyway).
Seem to not beat up on the old ICs, but foaming of the cleaning solution may be an issue?
Since I’m only removing fresh manufacturing stuff (flux, fingerprints, dust, etc), I’m leaning toward the residential dishwasher method, maybe with Branson EC cleaner.