Martin ... reasonable suggestion but it's the evaporator fan motor in the freezer compartment, which isn't exposed to dust/debris like the condensor fan motor at floor level outside the box.
I haven't yet checked it with a meter. I don't know what's a proper resistance reading so can only reference if it's dead or not getting power. It's a "simple" SxS unit ... no electronics other than a defrost board which I assume is not directly involved in running the evaporator fan.