Nicolas, any time you have any electronic component being exposed to water you are running the risk of shortcircuiting any component. I suggest you totally disassemble the controller, after that soak all the components in high grade, preferably anything of 90% isopropyl alcohol. this will displace all the water that may have collected under any of the components. Air dry it after and re-evaluate. Do keep in mind, that just because the components look okay, their internal function may have failed. Not every short circuited component shows external damage. Scott Towels are great for gross contamination, but most certainly not for the microscopic one.