Any electrical device can be the source of the problem.
Garage door opener suddenly loses range.
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Most homeowners have a spare garage door remote which is great in a situation where one goes missing.
If the range improves then the interference is coming from a device in the garage.
Try making small adjustments.
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.
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.
Place a stepladder at the area of the garage door.
The range on the remote of my garage door opener liftmaster model 2110 or 2220 is suddenly so short that it barely works when the remote is outside the garage door.
It s possible you are out of range of the antenna inside the garage.
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Make sure that the antenna on the motor unit is hanging downward and is not damaged in any way.
Modern garage door openers are essentially small radios that operate at about 315mh and a few feet of extra distance can affect the signal.
Improve the performance of an opener and increase the range by adding an antenna extension that you can buy online or at electronics outlets.
Erase the remote from memory reset the opener s code.
A lower voltage in the battery will reduce the garage door opener s range.
The batteries provide the power to send the signal.
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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.
Liftmaster 41a3504 residential garage door opener antenna extension kit.
I suspect an issue with the antenna wire.
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.