My vacuum suddenly acted as if something got stuck in the brush and began to make a terrible noise and smell awful. I figured it was a quick pop it open, free the brush and I'd be on my way. Nope! Turns out the motor is sparking more than normal at the armature and brush contact point. And the motor acts as if it's under a lot of stress. I disassembled it, cleaned the armature, inspected everything and it looked okay. Plugged the motor in and gave it a brief whirl and quickly off as I could see the same issue persists. A new motor is about $50 but I'd rather keep that in my pocket and do a minor repair. If the armature is bad or hell even if it's just the brushes, I don't believe you can buy them. You're forced to buy a new motor instead. Any thoughts?