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

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Model#139.53675SRT2 works fine in warm weather but not in cold

When it gets cold no matter what remote you use the door will go up 1/4 of way , then you push remote again to go down then again to go up several times before it will go all the way open.. it might take 5-8 times before opens all the way.....the opener works great in warm weather???? Never a problem with closing garage door always problem when trying to open in cold weather only???

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Add more up force to adjustment

Posted on Jan 15, 2009

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1 Answer

Remote key will not open door


hi, gareth hear
i think this mite work 4 u

get in your car and put key in ignition turn 1 turn then wait approx 15 20 secs for light in clock to go red then take key out light should stay lit, next get out of your car close door then lock it and open it, when u open car light in clock should flash 3 times, next get out of car hold lock button on your remote down and push open button 3 times (keeping lock button down and remote pointed at reciver) next lose go of both buttons and red light on key should flash 3 times at the same time as clock inside the car.
next get in your car with key! then start her up and turn off get out of car close door and push button to lock (it should lock) if not get back in start her up again and turn off, then push the door locks inside the car then open get out and your car will lock this time!!!!!!!

this will work 4 u!!!

good luck

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Chamberlain Liftmaster Professional 1/2 HP


Okay...upon further inspection, my left spring has broken in two. Going to call around for some quotes to replace the spring. Thanks for the suggestions.

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