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

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Gargae door remotes dont work

We have a new chamberlain garge door opener, the remotes only work when i shut the circuit breaker for the microwave/range in the electrical panel off. if the breaker is on , they dont work at all or if only right next to the door, have installed a remote device at the manufacturer suggestion, did not help, unplugging the microwave does not help, breaker must be turned off, had no problem with the previous opener (Genie)

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AS SILLY AS IT MAY SOUND , DO THIS CHECK ,ALL OF THE NEUTRALS FOR THE MICROWAVE AND RANGE ,THESE ARE THE WHITE WIRES CONNECTED IN THE PANEL AND IF THE RANGE IS SEPARATE IT WILL BE THE BARE OR WHITE OR UN INSULTED ONE DEPENDING ON THE AGE OF THE WIRING OF THE HOME , HERE'S WHY PARTLY OPEN NEUTRALS GENERATE RF OR RADIO FREQUENCY WAVE , USUALLY THESE DO NOT BOTHER EQUIPMENT BUT THIS IS NOT ALWAYS THE CASE IN MY TIME I SAW A OPEN NEUTRAL SHUT DOWN A HOLE BAY IN A HUGE COMPUTER SYSTEM AND CHARGED 10K DOLLARS TO TELL CUSTOMER TO BUY A NEW FLOOR BUFFER , WORTH A LOOK SEE , PS MAKE SURE WIRES ARE TIGHT AT THE PANEL AND @ THE RECEPTACLE THAT POWERS THE DOOR AND ALL POINTS YOU EVEN THINK IS PART OF THE MICROWAVE /RANGE CIRCUIT

Posted on Jan 13, 2009

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Where can i find a manual for craftman garge door?


Probably needs an adjustment. I would check Sears website as they have lots of info there for products they sell. An operators manual should give you this info.

Jul 21, 2014 | Sears Craftsman LiftMaster Chamberlain...

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Garage door opener Chamberlain - programming problems


I bought a new keypad and 2 VISOR remote (30498). As to programming garage door opener, I did like here:
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- it tooks me 20 minutes and works great

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Lift master gargae door opener only will close when you hold the remote button till it closes


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.

Dec 30, 2011 | Sears Craftsman LiftMaster Chamberlain...

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Installed a new gargae door Now i cannot get the


The laser eyes have to go on in a certain way. One of the eyes can not be where it will get direct sunlight. I had one that would not work in the summer about 1:00 pm when the sun was shining in it just right. I would not have any problems in the winter. If you can try to switch sides with the eyes.

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Have a Craftsman 1/2 HP auto gargae doors. Lost power during a snow storm. Once power was reconnected only thing that did not work was garage doors. Is there a reset button somwhere....can't see one.


There isn't a reset button. Check the house circuit breaker. You may have had a power surge and that can damage the logic board printed circuit. Check the logic board for missing or burnt traces especially around the small transformer.

Feb 14, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Replaced batteries.changed codes verified not in lock position checked wiring-checked breakers -remotes dont work have 2 different units-one commercial all stopped working on same day -need help


I have the Same Problem...
2 similar but independent 315MHz Craftsman door openers stopped receiving any remote signals at the exact same time. One hour they worked , next hour they didn't, no storms in area.

I know remotes are good because they still open our subdivision gate. the Only way to open door is with wall pad. Verified that they are not on vacation lock. 5 different remotes, 2 different keypads all no longer open door.
I tried resetting codes with learn button but they won't take new programming. Also before when an unlearned remote was used in the area, the learn light would at least flicker (as if it was receiveng a code, but rejecting it) It no longer even does that.
i even cycled the circuit breaker and the vacation lock, no help.

Does anyone know how to fix this?

Oct 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a chamberlain garge door opener and I bought a genie intellicode outside remote access and can't get them to work together.


They will not work together. You need to get the keyless entry for your chamberlain garage door opener. Or got a wired system gd-1 from Domino

Oct 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

How do I re-code my Raynor Garage door opener Model 61 rdg (on Remote) Serial # 17592 (on opener) Year 1992? I am a new resident in the house with this garage door opener. The remote control opener worked...


on the back of your garage door opener there is a colored learn button--press and release-the learn indicator light will glow for a short time usually 30 seconds. within thirty seconds press and hold the buton on the hand held remote that you wish to operate your garage door. release the button when the motor unit lights blink. if you don;t have a light, two clicks will be heard. it has learned the code. procedure will be different for multi function control.

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1 Answer

My sears gargae door opener quit working with the remotes.


Took the side off and blue off the board, and re-connected all the wires and conections. It then started working again.

Dec 08, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftman garge door opener changing code on key pad


having all the remotes you want programed with you, find learn button on back of opener. hold button until little light goes out- no remote will work now, with each remote Press learn button once,Press big button on remote-light bulb on opener will blink on/off if bulb is working-do this each hand held-keyless is same way, put you 4 #'s in HOLD enter button-light bulb blinks on/off you have 15 sec. for each time you hit the learn button. also best to start off with new 9 volt battery before you start programing

Aug 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

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