Peter P Port Matilda , PA March 22, 2015 The large ceramic block resistor in line to low motor failed I pulled out my multi-meter and tested the motor leads, then the resistor. The motor tested ok, and the resistor indicated infinite ohms. I ordered the resistor and replaced it. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Screwdrivers