First of all a pint of liquid, in this context, is an enormous amount of liquid. Think about how tiny and thin electrical traces are on a circuit board. On to solution.
Just wash the board off with distilled water. That will safely remove any impurities. As far as I know baking soda does conduct electricity but not very well. Once cleaned, dry the electronics thoroughly before reassembling and powering up.
Distilled water doesn’t conduct electricity. Distilled water is a pure form of water that does not contain any dissolved impurities, due to which no free ions are present to conduct electricity.
Let us know how it goes