Having a somewhat similar issue - received my v200 last night, seemed to be working fine but connected it to eScribe to get the latest firmware updates. Screen randomly went blank; thought it might have been in stealth mode, but turning stealth on/off seems to have no effect. Did a hard reboot, and the last thing I saw from the screen was the stealth mode prompt - no luck getting the screen to start up at all since, regardless of FW, brightness settings, etc.