Yatzek

I've got used X50V off eBay few months back and been using it since then without any problems. However, recently my Axim has been sitting in my briefcase for over a week and when I wanted to use it I couldn't turn it on by pressing Power Button. It did turn on when I pressed other buttons, like Wireless, Recording, Mail, etc. Other then the power button problem, the device works fine - no problem charging and syncing, also LEDs are fine. I've opened the case and checked the power microswitch and it works fine - it is not broken. Any idea how can it be fixed or what else I could diagnose? I re-flashed the system with WM5 A01 however it didn't help - I thought that maybe there is some software problem there. Was trying to find broken X50V for parts, however no luck yet.

Any help is appreciated,
Jacek