I have a Kirby Heritage II vacuum cleaner that was repaired a few months ago. The problem was that the carbon brushes had worn down, thus the motor would not operate.
Now, a few months later, the vacuum was in use when the motor started to die and finally stopped. I opened up the vacuum and noticed that one of the carbon brushes appeared to be worn again -- so I wasn't getting good conductivity across the motor. This appears to be suspect that the new carbon brush would wear down so quickly.
What could be wrong with the motor, and is it really worth fixing?
--Clarke
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