From what I saw, this is a common problem with Harmony remotes, and there are 4 screws in the back that remove a plate, and several clips around the edge that you can unsnap using a grown out fingernail or theoretically a guitar pick. something hard enough to work but soft enough not to damage plastic. Unfortunately I also read that the buttons are a sealed membrane assembly, so it probably wouldn't do any good to take it apart.

My advice is to email Logitech, even if it is out of warranty- they have good technical support, and see if they can help you.

if not, have at it.

cheers!

EDIT: here, someone's done it.

http://www.remotecentral.com/cgi-bin/for...