The fan has a very thin wire in it's coil, and when that wire breaks, you need a new fan. In a previous repair, i noticed that an ice build-up had dislodged the wiring on my fan and severed the coil winding. I was able to undo the winding a couple of turns and get it working again.
But more recently, the fan stopped and there was no repairing it. So i ordered a new fan from AppliancePartsPros.com and it got here in very good time. The new fan was slightly different as the prongs seemed to be on the opposite side of the assembly, but i just reversed the blue and the black wires from there original orientation and it works just fine.
The only thing truly worth noting about this particular repair is that the original fan has a rubber grommet on both the top and the bottom of the fan. You will need to transfer these two grommets to the new fan in order to complete the reassembly. So, if you already threw away the old fan before the new one has arrived, you might maybe better go out and stop the garbage truck before it is too late....
But yeah, the grommets sit on the bottom of the motor and on the shaft that you reattach your fan to. On a side note, while waiting for the replacement motor to arrive, i discovered that i was easily able to take the two power supply wires and insert there prong clips onto a regular house hold fan to keep the air circulating until my replacement motor arrived.
This was all accomplished this week, so i can not verify the durability of the replacement motor as of yet.(but it is quite solid and well constructed)