Should the motor produce light?!?
Because the blender makes a "burnt rubber" whenever its run regardless of load, I removed the cover from the base to inspect the fan, motor, and assembly.
Seeing nothing amiss, I cradled the base (inverted) and "pulsed" the blender. For every pulse, there was a flash of bright light. It was white, not orange.
Is this normal? Could this be arcing? That might explain the "burning" smell.
Is this a good question?