Tom, just let it dry out for a while. It may take days. A drying cupboard may help. Or a film dryer chamber.
I used to repair electronic musical equipment (amps keyboards/synthesizers). I once worked on a keyboard (ARP Omni) that was in a flooded nightclub. I removed the boards let it dry completely with the aid of a hair dryer.
The only thing I replaced was the slider controls. It worked fine. As long as you do not power the equipment when it is wet, it may be OK.