I have a fuji finepix sl 1000

My fuji SL 1000 still takes perfect pictures but when I press the menu botton the menu options run up and down very difficult to make a selection. The same applies when viewing pictures it will run forward and back . It would appear that the circular dial at the back has become faulty or over sensitive , when a turn the camera off and rotate the dial a couple of times matters are fine but not for long. Do you have a solution for me.

Thank you Eric