Fantastic Fan Circuit Board MC 103
The fantastic Fan controls has a circuit board called KIB MC 103. Does anyone know what the mc 103 does? Still tring to find out why my fantastic fan does not work. The problem might be with the ...
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I just took my Fantastic Vent motor apart to see what is causing it to fail. This is the third one in 9 years that failed the same way.
The motor is not designed to be disassembled, but if you drill out 3 "spot welds" it come apart after prying a little bit. The brushes were worn out and were only intermittently contacting the commutator. The brush material that had worn away had turned to fine dust and was all over the inside of the motor. I cleaned out the inside of the motor using a fast-evaporating circuit board flux remover. The brushes had worn away and the brush wire hit a stop that keeps the brushes from coming out all the way. For a temporary fix, I moved the stop out of the way and the brushes now push properly. This fix will only last a short while, however (maybe a month or so). Since it's unlikely the brushes will be available from Fantastic Vent, I will buy some generic brushes from Sears hardware and sand them to fit. I have a previous motor from the fan and will take that one apart to see if it's a similar fix. The motor was pop riveted back together and it works fine now. Beats paying $50-$75 for a replacement motor.
Steve
The motor is not designed to be disassembled, but if you drill out 3 "spot welds" it come apart after prying a little bit. The brushes were worn out and were only intermittently contacting the commutator. The brush material that had worn away had turned to fine dust and was all over the inside of the motor. I cleaned out the inside of the motor using a fast-evaporating circuit board flux remover. The brushes had worn away and the brush wire hit a stop that keeps the brushes from coming out all the way. For a temporary fix, I moved the stop out of the way and the brushes now push properly. This fix will only last a short while, however (maybe a month or so). Since it's unlikely the brushes will be available from Fantastic Vent, I will buy some generic brushes from Sears hardware and sand them to fit. I have a previous motor from the fan and will take that one apart to see if it's a similar fix. The motor was pop riveted back together and it works fine now. Beats paying $50-$75 for a replacement motor.
Steve
