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

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When I open the garage door it only opens half way and then stops

My opener is a crafsman 1/2 hp.Model#139.53673srt1.It's about 11 yrs old.Was working fine then all of a sudden when you wanted to open it it would only open half way.It closes fine only when you want to open it does the problem accure,

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Gears may be wearing out. Take of panel with light bul (4 screws) and look inside. See white stuff? That is your nylon gear that is worn out. Rebuild or replace,

Posted on Jan 15, 2009

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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

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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...

1 Answer

I have an old craftsman 1/2 hp door opener. It


You may have a bad wall control. Try disconnecting it from the opener and try. Otherwise it is time for a new model.

Apr 26, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Cannot get remote for garage door to work


push the green button on the opener then push your remote button

Jan 25, 2010 | Locks & Locksmithing

1 Answer

I have a crafsman opener #139,53879. Installed an outside remote on door and now the factor opener will not work.


Sounds like your outside remote may be the wrong one for your opener. Program your original remotes and you will most likely find your outside remote will not work. The model number for your opener is on the opposite end of where all those white wires go. Use it whenever you need to buy anything for your opener.

Dec 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Remote Garage Door Openers won't work


Does your wall console have a LOCK or VACATION setting. Turn off.

Dec 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

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