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

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Cant find the dip codes for my door opener model#139.53615sr. have new remote wont work

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Your opener doesn't have dip codes. It has a smart/learn button that is near where all those white wires go. Make sure you bought the correct remote for your model.

Posted on Dec 12, 2009

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SOURCE: HAVE SEARS/CHAMBERLAIN

Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.

Posted on Dec 22, 2009

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1 Answer

Liftmaster Garage Door Opener won't clear codes


This was a first generation learn button model. Antiquated by current technology standards. It was a two channel system. One channel for a dip switch remote, the second for a 66LM key pad. No way to erase the programming, however, by programming in a dip switch remote (61LM with the dip switches set to new positions, and a 66lm set to a new entry code) will purge the two channels of their previous memory, now set to the the new settings.

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I have a sears model # 139.655000. The remotes have 9 dip switches. I need the transmission frequency so I can match up the right replacement remote.


Your opener is very old and I'm positive you can no longer get the remotes. You might look into one of these.

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It is a universal remote and receiver that operates on the new frequency and has the rolling code feature.

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Posting your garage door model would help, but there may be a button close to the LED on the garage door opener that you have to depress to allow the two to pair up. Assuming that this is the similiar to my garage door control mechanism, if you have the dip switches set correctly you need to depress the button mentioned above and then depress one of the buttons on the remote.

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Its very possible for someone esle to have your code I would say try two things. The first thing is too check your wall button wire shake it is a little make sure there are not cuts or staples in the wire its self cause it to short out and run. Then change your codes is pretty easy on the back of the opener unit its self there are the dip switchs you will most likly need a step stool. Just move 2 or so of the dip switchs and then move the same ones on your remote. On your remote the dip switchs should be undernether the batter cover

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