Chosen Solution
i accidently dropped my 3DS in water. the power was on while underwater. i immediatly took it out of the water and then it automatically turned off. when i dried it off and turned it back on the top screen was completly black. after about 2 hours i turned it back on and the top screen was back on but there are now many other problems such as: circle pad moving by itself forcing all movements to go to the left notifications light is staying lit green A and X button not always responding. does anyone know what i should do?? PLEASSEE HEELLP!!!!
As with all devices that have been submerged in water, the best thing you can do is disassemble the device and clean all of the contacts with a cotton swab and a high concentration alcohol (>90% concentration). You can access most of the internals pretty easily by removing the lower case.