I havent tried yet, literally just got back from the track. I'll check tomorrow if the link recognizes the MMM. And no, no beeps no motor noises at all. Only power from the bec.
It happens to me one time, my ESC opened itself and some wires were cut off... I had no choice but to send it back in warranty. Since this accident i always oversecure my ESC with tape and ensare it.
Good luck.
Inferno VE MMv3 NEU-CC 1515/1Y 4S "Flying machine"