I've got some excellent pure water concentrate - just add water and stir!!
Best regime I've found for these situations is to put the affected part in the airing cupboard for a week, and then test it. My success rate is very high! Problem these days is not the components, but the very (very!) thin bits of circuit board that connect them. A very small current traveling the wrong way can burn them out easily.
Too late this time, maybe try that next time? HTH
