How can I fix the sound on my Note 3?

A

AC Question

Went to a concert a while ago and it rained all night, eventually giving my note 3 water damage to the point where all speakers, mic, and aux input stopped working altogether. Other than that the phone works great. The other day I suddenly heard the notification sound from getting a text message and tested everything including the mic and aux and everything worked. 2 hours later it all stopped working again. I tried taking it apart and wiping it with 99% iso a few days after I got the water damage but nothing helped. Any suggestions?