More screen woes...

I've got a Xenarc 700TSV powered by a carnetix P1900, running with an aopen minipc. i rebuilt the bezel and after reinstalling, it booted up perfectly. but when i touched the touchscreen, the screen shut off, and hasn't powered back up since. when powered up, the screen itself turns on (you can see the backlight come on, and the PC OSD), but then powers off immediately.

i took a laptop out to the car and plugged the screen into it, and the screen worked fine, but once again, i touched the touchscreen (touchscreen still plugged into the carpc, not the laptop), and the screen shut off again. the carpc works in the house plugged into my desktop lcd monitor.

anyone ever experienced anything like this? is something in the screen fried? thanks for any help.