@flaviob20996 for the complete disassembly, repair and part etc. go [[Topic:Nikon Coolpix 995]] and under Documents you can now get the proper literature (iFixit Magic:-) It'll tell you all you ever wanted to know about your camera.
When you do have it apart and since it did get water damaged, treat it like any other water damaged device. Clean the whole board, connectors and all with +90% isopropyl alcohol. Follow [guide|5825|this guide] It was written for an Apple 3G iPhone but all the points are still pertinent to your camera. While you clean your boards, check for any obvious damage, like burned or missing components etc. Best thing to do would be to clean it with an ultrasonic cleaner, but if you do not have access to one, this will at least help. Once all this is done, reassemble your camera and reevaluate.