This worked GREAT. I would only add that alcohol wasn't sufficient to clean it in my case. Although the contacts "looked" clean they didn't work... I could reposition any other key over the pc board position for the volume and it would work. So it was the carbon film on the bottom of the button causing my problem. I tried cleaning them with 1500 grit emery paper and still nothing. I tried the aluminum foil trick. That worked but I was concerned about what sort of unwanted contact it might make if it slipped after I started using it. So in desperation I wet the emery paper in alcohol and "wet sanded" the carbon film. THAT WORKED!... Now it's like new. Thanks for your info on getting the thing open and the overall approach!