Product review (1 stars): Works on and off
The RPM of motor will slow down to the point where there's barely any air circulation in the freezer/fresh food.  Weird thing is that if we use a portable fan to blow directly on the motor then the motor will come to life and work at proper RPM to circulate air.  However, that does not last for long.  We often find the motor going slow an hour after coming out of the defrost mode.  Unfortunately I'm not certain if other components in the fridge might be causing this problem.