Cleaning an A4000

[Damion]

It may be a bit time consuming, but a little isopro and/or distilled water with cotton swabs is a safe way to go. (Personally, I prefer not to submerge PCBs in bathtubs or dishwashers.) The liquid should evaporate quickly without leaving any kind of film.

I'll usually stick with just the distilled water anywhere there's anything printed (tops of chips, etc) just to be sure the IPA doesn't take the print off.

Afterwards, a little compressed air now and again will keep it looking new indefinitely.

-edit- One more thing to add, if you're dealing with food stains, distilled white vinegar annihilates them pretty quickly. (I usually use a mixture of distilled water/white vinegar.)

[Damion]

sniken wrote:
The distilled water i know where to get, but where would I usually find isopropyl alcohol? I have some aceton, but i fear that to be bit too strong.

Usually a drugstore or supermarket, try to get the highest concentration available (91% in USA supermarkets).

[Damion]

Another (easier) option would just be to get some electrical component cleaner (they sell it in spray cans at electronics stores). In that case you might want to remove the entire board, hold it upright, and spray all the crud off from the top down. Might be less chance of accidentally knocking something off the board that way... I just prefer the first method because I *know* there's nothing that's going to be harmful to the plastic, no streaks, mineral deposits, etc. :p