LiftMaster
Overheated Motor or Electrical Component Failure
Burning smell or smoke from LiftMaster opener housing during or after operation.
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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
Seized motor, shorted wiring, failing capacitor, overloaded door causing motor overcurrent
How to Fix / Troubleshooting
Safety: Immediately unplug the opener. Do not operate again until inspected. Risk of fire or further damage.
- Inspect door: Verify the door is not jammed or excessively heavy.
- Open housing: After cooling, remove the cover and look for burnt components, melted plastic, or charred wiring.
- Do not bypass: Do not attempt to bypass any burned components or fuses.
- Replace damaged parts: Typically the motor assembly, capacitor, or logic board will need replacement. If multiple components are burned, replacement of the entire opener may be more economical.
- Call a professional: Due to fire risk, professional evaluation is strongly recommended.
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Repair Difficulty
Professional Required
5/5
Required Part
Motor Assembly / Logic Board
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