Hi Raph,
The behavior that you describe is consistent with the power supply not being plugged into the AxiDraw. (And plugging in the power supply wasn’t among the things that you listed.) Please double check that your power supply is (1) plugged into the AxiDraw and (2) plugged into a _working_ outlet. If it is, and you’re still seeing this behavior, we may need to send you a replacement power supply. We’ve already followed up by e-mail, so please follow up there.