Braun blender 4191 motor part

I don't know if this will be helpful but I personally have experienced a number of small motorized products where there is a micro fuse placed in series with the motor windings and actually wrapped with-in the motor windings. Unfortunately by the time it is discovered it is not worth trying to repair. I would no be surprised if this is your situation. And yes, they put the fuse in the windings in addition to the normally accessable one. Go figure. Take care.