Just unboxed my UM3 and needless to say, was very excited to get a test print running.
I set it up according to the online video's unboxing steps. However, as soon as I press the "On" switch in the back, a switch underneath the printer can be heard (perhaps just the actual power switch which's sound seems slightly magnified), and the extruder fans turn on - both for a second. The LCD screen never lights up, and no other response other than what I mentioned above.
The power brick is the sole device plugged into the outlet and shines a blue light, and I have re-inserted both the spool's cord as well as the power source's cord several times. I have removed the hot ends AA and BB several times, and have essentially plugged/un-plugged every wired connection that is easily accessible.
Is anyone else having this wonderfully unpleasant problem upon unboxing your UM3?
Thanks in advance for any feedback!