Galaxy note3 SM-N9005...black screen

This morning my brother owner of a Samsung Galaxy Note 3 has dropped the toilet in Kotor, the unsuspecting after retrieving removed the battery and has tenteto wiping it with phono | Now I hear you say bad solution! good is the first thing that I also told myself !! to restart it turns on you hear the jingle of start, and flashes of light blue notification light but the screen remains completely black also backlit see anything what could not happen?