Chamberlain Motor Start Circuit Failure

Opener makes a clicking sound but motor does not start.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed start capacitor, Stuck motor, Faulty motor relay, Low line voltage

How to Fix / Troubleshooting

Safety first: Unplug the opener before opening the housing. Capacitors can store charge; discharge safely if replacing.

Steps to fix:

  • Check door movement: Ensure the door moves freely by hand.
  • Inspect capacitor: Replace the motor start capacitor if it is bulged or leaking.
  • Test motor shaft: Try to rotate the motor shaft by hand (if accessible). If seized, replace the motor.
  • Replace logic board: If the relay clicks but the motor never receives power and the motor/capacitor are good, the logic board relay contacts may be burned.
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Repair Difficulty

Hard 4/5

Required Part

Motor Start Capacitor / Motor Assembly
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