Chosen Solution
I have had my nutribullet for approximately 3 weeks. I have been using according to al guidelines. This morning a few seconds after the motor shut off there was a loud bang and then smoke started coming from the motor with electric burn smell.
@shonabass, Shona, It sounds like a internal part has let go/broken. Since the blender is fairly new return to place of purchase for replacement/refund. If for some reason you do not wish to return, the link below is a disassembly guide that will get you inside blender to perhaps see/test which part has failed(this may void warranty). Good luck. I hope this helped you out, if so let me know by pressing the helpful button. Magic Bullet NutriBullet Activator Replacement
