My Rx got a little wet.
N1EDM has given you a great answer to your dilemma, and I have done the same thing on occasion.
What I do now, however is to simply spray the affected part with contact cleaner. It is Tetrafluorothene and is inert. It drys within seconds and you can spray a live board with it.
If you notice heavy, foreign material you can also use a toothbrush with the spray to clean the board. Immediately after you've sprayed it with this you can safely apply power and test. Also you can spray the traces and the components, too.
I think you may find it at Radio Shack, but Mouser, Grainger, Digikey also carry a form of it.
I also recommend that you return it to the manufacturer, or competent repair facility before using it again, even it if appears to work properly.