Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
My garage door will only open about a quarter of the way then you have to shut it and try again. After about 5 trys it will open or if you are using the inside pad you have to quickly hit it twice to almost trick it into opening...can someone please help me please!!!! I thought it was a sensor problem but the left one is orange and the right one is green as it should be. any other suggestions?
I would suggest un-hooking the garage door from the opener (usually just pull the cord hanging down), and then try to lift the door manually. If you find it hard to lift then the problem could be that you need to tighten the springs so the door lifts easier. The opener only wants to lift so much weight and if the springs are too loose it makes the door too heavy. The weight makes the opener think it hit something on the way up - so it goes back down.
Posted on Aug 03, 2010
There seems to be a loose connection somewhere in the controller circuitry. I would suggest to visually inspect the solder connections on that controller board using a magnifier aid between 2X to 4X.
Posted on Feb 29, 2008
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Posted on Jan 02, 2017
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