Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
Posted by Anonymous on
Has the red rope been pulled ?? This releases the door from the operator.
If not you probably need a gear kit. Unplug the unit, Take off the cover and llok for white shavings inside. The shavings would indicate the gears are stripped.
Hope this helps
Posted on Jul 13, 2010
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Posted on Jan 02, 2017
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