The screen on my DPO3014 is not working properly. The lights, fan, and screen all turn on normally while the device is booting up, but after a few minutes, the screen appears to turn off randomly. I've tried rebooting the device several times, but nothing worked. I'm used to seeing a power cycle when the device turns on but now the device instantly powers up once plugged into the wall. The unit was sent in for calibration in December, and this is the first time it has been turned on.