Make sure that the antenna on the motor unit is hanging downward and is not damaged in any way.
Garage door opener suddenly loses range.
Any electrical device can be the source of the problem.
Place a stepladder at the area of the garage door.
Improve the performance of an opener and increase the range by adding an antenna extension that you can buy online or at electronics outlets.
If the range improves then the interference is coming from a device in the garage.
A lower voltage in the battery will reduce the garage door opener s range.
Liftmaster 41a3504 residential garage door opener antenna extension kit.
The batteries provide the power to send the signal.
Furthermore the homelink buttons in my car are no longer recognized by the liftmaster despite repeated attempts to reprogram them.
Replace the battery or batteries in the remote control.
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T his is a pretty uncommon problem but one that can happen after you ve first installed your garage door opener.
It s possible you are out of range of the antenna inside the garage.
Most homeowners have a spare garage door remote which is great in a situation where one goes missing.
I suspect an issue with the antenna wire.
It s important to get this switch at just the right distance from the motor so that the door is able to close all the way but the motor also knows to stop running.
Try making small adjustments.
If you have lost a garage door remote it s time to erase the lost remote from the memory of your opener and to reset the code.
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To isolate potential sources of interference turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room.
Modern garage door openers are essentially small radios that operate at about 315mh and a few feet of extra distance can affect the signal.
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