Oreck SL will not work on medium setting
Either your switch is not making a contact internally or the wire that runs from the motor to the switch is loose or not connected, or that speed is burned out on the motor. Those motors have a separate wire for each speed, so it's either not getting power to the motor from the switch or the that speed setting is burned out on the motor its self. I would just work around it and use the low or high setting until you can take it apart to test if the motor is getting power from the switch, if so then the motor is bad, usually the bearings go out on the motors before the wiring does. Unless your motor was on medium and was stopped for a long period and overheated that setting which will melt the wires and cause it to not work. They have a safety switch on the motors now to keep this from happening.
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