Replaced the condenser fan, took the back off the refrigerator and found the fan was missing a blade. Concerned about how hard it would be to fix so searched you tube videos and found the instruction video from appliance parts pros. They showed how to change the fan, easy repair. So with that info and a new fan, they even tell you what tools you will need. Had the fan changed out in less than 10 minutes. Nice a quite in the house again