Help!!! my note 5 back key is not responding and keeps pressing it self!!!

[AC Question]

Hello .. please help me
My note 5 has fallin into water
And it didnt respond after that
So i opened it and cleaned it and when i turned it on every thing went back normal except the back key .. it keeps pressing it self after 1 or 2 seconds!,but it doesn't respond when i press it ..
Please tell me whats the problem and what should i do ???!

 

[VW Maverick]

Welcome.
It may be too late, but check this over: http://forums.androidcentral.com/am...ow-s/477140-guide-oh-no-my-phone-got-wet.html

Mav.

 

[lo0olo_93]

Welcome.
It may be too late, but check this over: http://forums.androidcentral.com/am...ow-s/477140-guide-oh-no-my-phone-got-wet.html

Mav.

Thank you for your help
But can you tell me if the whole screen and every thing is responding and only the back key doesn't .. would the problem be in the screen or the motherboard