Hello Brooke,
Just out of curiosity, did the you look at the Step-by-Step guide here? It looks like it's pretty straight forward to remove the video and logic boards. I recommend, as I live in a dry climate, having a anti-static mat to prevent damage to the circuit boards. You may be able to rinse the circuit boards, minus the batteries, using distilled water and then allowing them to air dry. Don't us a hair dryer as that would force water where you don't want it to go. Otherwise, you may just need to replace the video and/or logic boards. I hope this helps and good luck!