Questions & Answers for: Bernina commutator

...itself. Remove the two phillips head screws to remove this panel. At this point you can see the commutator and inspect the "business" ends of the brushes. (In our case, one brush was almost gone ...

...occasionally available on EBAY and other sources. Note: If the motor brushes have worn out and the commutator has been damaged, the motor is also salvageable. ------------- Note: Always unplug the ...

...the motor brushes. If the carbon brushes have worn out, you will probably find some damage to the commutator bars due to the brush springs having arc-worn the commutator. Generally, this type of ...

...Remove the two phillips head screws to remove this panel.

At this point you can see the commutator and inspect the "business" ends of the brushes. (In our case, one brush was almost gone ...

...visible from the back - could it be the motor brushes need replacing? May be worn brushes or dirty commutator or a small value capacitor not doing its job ... ...