I have not heard of any assured methods of getting them working again, just holdover methods like oven baking. Unless you're pretty good with electronics and want a project.
I use one of those 3rd party intercoolers and you can notice the lower air temp around the machine with it turned on. Its just 3 fans about 2.5" each that suck air out the back and draw it in everywhere else. Cant see what harm they could possibly do??