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31,266 Posts
resurrect...
pop the speed control knob off then underneath, in the potted unit, there is a small variable resistor. The common problem with these gadgets is that the wipers don't make good contact with the resistive arc-strip they swipe around. Pressing on them usually diagnoses this - it works or stops working etc. Lo and behold, pressure on the VR may cure the problem. place a couple of tiny rubber washers on the face of the VR so that they come between the circular knob and the VR - padding, if you like. When you press the control knob back on, the VR is now under a little pressure. it may start working again...
plan ''B''...
the small yellow wire is a feedback wire into the controller and doesn't need to be hooked back up to anything. The wire from the switch goes directly to the wire from the motor.
pop the speed control knob off then underneath, in the potted unit, there is a small variable resistor. The common problem with these gadgets is that the wipers don't make good contact with the resistive arc-strip they swipe around. Pressing on them usually diagnoses this - it works or stops working etc. Lo and behold, pressure on the VR may cure the problem. place a couple of tiny rubber washers on the face of the VR so that they come between the circular knob and the VR - padding, if you like. When you press the control knob back on, the VR is now under a little pressure. it may start working again...
plan ''B''...
the small yellow wire is a feedback wire into the controller and doesn't need to be hooked back up to anything. The wire from the switch goes directly to the wire from the motor.