Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

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LiftMaster model 976M occasionally opens 1/4 of the way and then comes to a stop. If you hit the open/close button on the wall it continues to open and then closes fine. Doesn't happen all the time. Hardware has not been cleaned or llubricated in a 20 years. Is the motor designed to stop if it meets to much resistance opening the door?

Posted by Anonymous on

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5 Related Answers

Anonymous

  • 6 Answers

SOURCE: Chamberlain Liftmaster Pro. Garage door Problems closing

The sensor eye - or more likely, the other end, the sensor light - probably got knocked out of alignment. The eye should have an LED on it - possibly one that glows green when it's ready to close or red when it's obstructed or out of alignment. Try adjusting the light until the LED on the receiver glows green.

Posted on Dec 07, 2008

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Anonymous

  • 244 Answers

SOURCE: Liftmaster 1265LM 1/2 HP does not open or close with remotes

is chain moving. if not, gears are shot. if moving, is trolley connected.

Posted on Jan 15, 2009

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Anonymous

  • 244 Answers

SOURCE: Craftsman Garage Opener Clicks only and LED blinking 5 times

first off, hitting extra button on remote would not do anything. Is door up or down/ where is trolley that attaches to chain, by door or motor. Is is jamned against a bolt. Try a paper clip and jump from white to read terminal. Does it work. Does light bulb blink 10 times. I ignore the diagnostic lights and go by symptons. Give more info.

Posted on Feb 12, 2009

Don Maggard

  • 3197 Answers

SOURCE: Liftmaster wireless keypad closes but won't open the door

If you are sure the battery is good you have a bad keypad. The signal strength is so weak it will not penetrate the door.

Posted on Aug 25, 2009

Don Maggard

  • 3197 Answers

SOURCE: I have a liftmaster door opener model 41a5021-1d

Check the door springs. You may have a broken one. You should also remove the cover and check the drive gear. It is white nylon and is just in front of the motor.

Posted on Nov 21, 2009

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Check the door sensors. Make sure they are pointed at one another and the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.

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1 Answer

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If the main light is flashing 10 times when the door reverses you have a door sensor problem. Make sure they are pointed at each other and the small light on each one is lit and not flickering. Tweak them if necessary. If you cannot get the small lights to both come on you have bad sensors.

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check electric saftey beams. shovel blocking them. dirty. aligned (LED on in each unit)

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1 Answer

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The unit is in the lock mode, push and hold the lock button in for about two seconds and the green LED should stop flashing. Your remotes should work.

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