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Carl, is the condenser fan motor running also? Looking at the wiring diagram of your refrigerator, you need to check for 120vac at the fan motor. If there is, replace the fan motor. If there is not, replace the Defrost Control.
That motor is an evaporator fan motor. That noise occurs when the bushes in the motor start to wear. The motor is not in effect repairable but has to be replaced. Normally a 9 watt evaporator fan motor is installed into those wine coolers.
It's the rotors making the noise not the motors! I replaced the motor, still made noise, I took off rotor blade sanded it down around each blade, no more high pitched hum!
Turn off the refrigerator. Remove the freezer shelving and bins. Remove the screws holding the rear panel inside the freezer. Repair or replace the fan motor. You may also have to remove bin supports from the side wall to get the panel out depending upon your model. The model number posted is incomplete.
Below is a link courtesy of www.repairclinic.com, that shows the evaporator fan blade. This may have come loose from the fan motor shaft and may be striking the fan shroud or rattling on the motor shaft
A loose fan blade cause elevated temps. If the fan blade is loose, replace it, not repair it, to avoid further problems.
Check and make sure the other two connections are solid.sometimes when the fan gets unplugged, the terminal gets loose and looses connection where it is soldered into the fan motor. Some models need to be a certain temperature in order for the fan to work. You can check voltage to the fan also. There should be 120V to the fan. Makes sure the fan/light switch is pushed in (on some models). If I can assist you further, please let me know.
In the Freezer or Fridge compartment, there is the Evaporator Fan (& Motor) If the freezer is cold, the Evaporator fan motor most likely went bad. Check to see that when the compressor is running, so should be the fan motor. If not, you have to remove it & replace it. It is not an expensive repair unless you call for service on it. Make sure that you unplug the fridge when you replace the fan motor.
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