issues with call button

[Jesse4]

Hi, long time lurker, first time poster. Here's my issue:

I own a titan, as does my father and my brother. All three of us have now had the call button (green phone button you push to have the phone actually dial the number) stop working. This must be a reasonably common issue, because while we're not lucky, we're not THAT unlucky. I'm wondering if anybody has tried to open up the phone and fix this issue, and if so, how difficult was it? Has anybody else experienced this? It's really a pain in the rear because most of the dialers expect you to be able to push that button to actually call, and I can't.