[Qmulus]

Originally Posted by Brad Roberts

WD40 and tooth brush.. I've successfully cleaned them and had them work for 4-5years after the cleaning (one car sold to an East coast customer and it still runs)

Well, there are lots of things you could clean them with, and if you are lucky enough to just be dealing with a little corrosion, that can work. I haven't been that lucky. I personally wouldn't use WD40 as it can wick into the fiberglass of the PCB making repairs more difficult. Of course you can't argue with success... The ones that I have worked on needed relays, trace repairs and removal of many of the components to get to the corrosion.