I have isolated a vibration to the function buttons on the face of my 935. When I listen to stuff with fat bottom end at lower volume, there is a slight vibration noise. It goes away when I isolate the function buttons with my fingers. Any suggestions on how to fix this. I don't want to screw anything up over a slight hum that isn't noticeable when I put the volume past 3. I know what your saying...Man up and turn it up. 90 % of the time it's up at least around 5-6, but I don't know. I love her so much...just want to take care of my baby.