Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not flickering. If you cannot get both lights to come on you have a bad sensor.
Posted on Nov 04, 2010
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Posted on Jan 02, 2017
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