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

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Door not opening

I have a sears 1/2 hp chain drive 8 years old the other day the door was open from the inside but would not close by remotes. I have since attempted to to reset the remotes & key pad but the code is not activating the motor even though the little light flickers on the back of the motor. I replaced the batteries on the 2 remotes & the key pad. I am at a loss for my next step. Any suggestions. Thank You John Long

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First, check the safety eyes. There should be a light on on each eye. If not realign until they come on. On the wall button if the green light is blinking press the lock button on the wall control for three seconds. The light will go solid. If either of these do not fix respond with more detail and I will help.

Posted on Feb 26, 2009

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Posted on Jan 02, 2017

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Don't know Mod. No. lost installation manual, approx. 5 yrs. old Need installation manual.


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    [PDF]GARAGE DOOR OPENER Model 3265 1/2 HP ... - LiftMaster

    www.liftmaster.com/.../en.../tucmanuals/114a3044.pdf Chamberlain GroupFasten the manual near the garage door after installation. .... This garage door openerhas been designed and tested to offer safe service provided it is installed, ...

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    [PDF]GARAGE DOOR OPENER Model 3265 1/2 HP ... - LiftMaster

    www.liftmaster.com/.../en.../tucmanuals/114a3044.pdf Chamberlain GroupFasten the manual near the garage door after installation. .... This garage door openerhas been designed and tested to offer safe service provided it is installed, ...

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1 Answer

Garage door only raises about two inches then stops.


Check the door springs and also remove the cover from the motor unit and check the drive gear. The door spring could be broken or the drive gear may be stripped.

The sensors only work when the door is closing.

Jun 15, 2010 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

Sears garage door opener 1/2 hp about 6 years old. Will not respond to remotes to open and close. Light flashes on opener when remote is pressed but no door action.


Door sensors are not working. Check if lights are on both sides.
Might be misaligned or one is bad.
Door will close if you hold in the garge close button until it's all the way down.
And it will open on it's own.
You can get these off ebay.

Jan 15, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door doesn't open or close


You should check the gears inside the box, After years , the gears get dry and die, you can by online or from Sears the kit and replace the old gears. I just changed mine...not too difficult :) .

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CRAFTMAN 1/2 HP OPENER


You say it only opens two feet?? Then closes?? If I may if you a little bit more costly option. Dont replace the gears. They used to be really good 8 years ago but the way they make the gears now there too soft and often strip out much faster. I would suggest that you do what we call a motor head change out. Take off your old chain drive motor head and buy a new one. Pretty simple. Two things though one always make sure you put the new one in with the door down. And the traveler in the down position ( The traveler is the metal thing hooked up to the chain) but far and your gear that you have it sounds to me that you dont have the gears close enough.. but 100 percent on that but a door should never close on it own. It's not safe.

Feb 09, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Sears Craftsman 1/2 HP Chain Door Opener


door sensors may not be aligned or may be blocked. otherwise, the motor power setting may be too low.

Aug 17, 2008 | Sears Craftsman LiftMaster Chamberlain...

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