Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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Liftmaster Remote garage door openers work intermittently.

Keypad in garage works fine 100% of time. Remote openers in car work very intermitently. Sometimes we spend several min. trying to open the door from the outside while in car. Sometimes they work great from the end of the driveway. Sometimes they work great up close. We replaced the batteries in openers.

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  • Contributor
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Check to see if your ant. is up inside of the cover it's a little black wire that hangs outside of the operator shiould be about 6 inch.

Posted on Jun 07, 2009

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