LiftMaster
Logic Board or Power Input Failure
Garage door will not open or close at all from wall button or remote; no motor sound, but opener lights may be on.
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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
Blown internal fuse on logic board, failed logic board relay, loose power cord, tripped GFCI outlet
How to Fix / Troubleshooting
Safety: Do not attempt to bypass fuses or safety devices.
- Check power source: Verify the outlet has power by plugging in another device. Reset any tripped GFCI or breaker.
- Inspect power cord: Ensure the opener's cord is fully plugged in and not damaged.
- Test from learn button: Press the LEARN button on the opener. If there is still no response, the logic board may be faulty.
- Inspect board: With power disconnected, remove the cover and look for a replaceable fuse. If blown, replace only with the same type and rating. If it blows again, a deeper fault exists.
- Replace logic board: If no simple cause is found, replace the logic board with the correct LiftMaster part.
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Repair Difficulty
Hard
4/5
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