Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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I have a Liftmaster garage door opener & remote. The remote began to work only intermittently. I replaced the battery (I didn't reprogram remote when battery was changed & remote worked for a while) & again only intermittent success to open or close garage door with remote. Hardwired button works fine. Has the contact switch died in remote? Entire garage door opener system was replaced 2 yrs. ago to Liftmaster brand. Any ideas or suggestions? What would you do?

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COULD BE A BAD REMOTE, I WOULD TRY ANOTHER ONE FIRST.


COULD BE A FREEZER ETC. PUTTING OUT INTERFERENCE.


OR


Anytime a door opens and/or closes randomly or doesn't work consistently I look for a smashed wire between the motor unit and the wall button.


If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.


Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.


The second thing would be a bad wall button or a remote with a sticking button.

Or a remote in someone

Posted on Nov 11, 2010

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