Before taking apart your TS, might I suggest something. Since the TS is dead try jump staring it, might work. When you are in the Utility try this:
"I have replicated my problem. If the TS is getting a geture set update, and you unplug during the transfer, the TS will not work on any computer. Resetting via the 5x palm trick does not work either. Windows does not find any new hardware when I connect the TS on any of my 6 USB ports.
Using the fingerworks utility (Device firmware upgrade) my ts is found in the drop down box. I used apply default upgrade for this product. Pressed start, let windows install the new driver for the TS, now it works. My initial problem was that like you I had a spark of electricity hit my TS when I sat down to use my comuter. I just recreated my problem by disconnecting the ts before the gesture set could be updated."
My thought is to disconnect your when you try to upload a gesture set, then to reinstall the original firm.
Why not try, what could it hurt.
BTW, I leave a igesture numpad in my car every night. I live in PA, cold does not affect the unit on my end.