Good luck with it..
It is a fantastic piece of kit , even as an SD camcorder
After your post I did a bit of searching in another forum I belong to ( dvdoctor) and found a link to a uaser in the states who had it and blamed it on a case of dodgy firewire blowout but it was also early and was replaced quickly ad didnt put him off
Clearly it happens very rarely and possibly very early.. Nobody in my circle of friends or on these forums seems to have experienced it
Once again Good luck with it
Out of interest Considering the HC3 is much cheaper , has HDMI , an slightly better lower light ( but not daylight/ outdoors) performance but no mic in and manual focus ring : was it on your shortlist?