we are experiencing the same problem... we just ordered the button from sdcamerasolution.com, the whole top panel with both buttons was around 40 bucks. now i am working on information as to replacement of said panel. looks like it snaps in but am not going to go prying on the camera without some general info on how it comes apart. there are lots of sources to purchase information on the web, but this will be a last ditch effort on my part to do so... hope this helps...
mineralguy@gmail.com