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

3 Answers

My light bulbs keep burning out prematurely on my garage door opener.

I have tried replacing the bulbs with heavy duty ones but this did not solve the problem. Someone suggested that i might have a problem with the logic board. Can this be repaired? My model number is 139.18470.

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  • gtholl Mar 16, 2008

    Less that 2 year old opener. First, bulb on one side would burn out prematurely. Then both sides would burn out. I have tried replacing the bulbs with heavy duty bulbs but this did not solve the problem. My model number is 139.53985D.

  • Anonymous Apr 05, 2008

    Craftsman garage door opener that is 4 years old and I have to replace the bulbs probably every 1 to 2 months ever since it was new.

    This is driving me a bit nuts!!

    Any suggestions or help out there??

  • Burnt Out 43 May 04, 2008

    Sears Craftsman LiftMaster 139.53985D Garage Opener lights burn out every month. Now it is every week we keep replacing them.today they are burnt out again after replacing them yesterday. We installed the garage door opener in January of 2008.

  • Anonymous Jun 03, 2008

    I have the same problem on my Craftsman garage door opener. The light bulb goes out after about one month. Tried heavy-duty opener bulbs, temperature and vibration resistant appliance bulbs, and vibration resistant ceiling fan bulbs.

  • Phil Oellrich Jun 03, 2008

    Same problem. Tried vibration-resistant bulbs for garage openers, appliance bulbs, and ceiling fan bulbs, no difference.

  • krnl4life Dec 09, 2008

    I have had this problem with my 2 yr old Chamberlan Liftmaster, and I think that the socket is defective or something. The bulb isn't burning out, but seems to be jiggling, vibrating, or wiggling itself loose somehow. It appears burnt out, then I screw it in tighter and turns on and subsequently the process repeats itself a month later. Do these match your symptoms?

  • stellahan762
    stellahan762 Jul 23, 2012

    You can buy special bulbs just for garage opener use they last forever! Ask salesman.

  • saralieder
    saralieder Oct 13, 2012

    I have replaced light bulbs, but now when I replaced them, they still won't work. Is something broken somewhere else?

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  • 158 Answers

I tried a REVEAL(brand) 40 WATT DOUBLE LIFE CEILING FAN LIGHT BULB , and almost two months later it still works. It is sold at Home Depot in Illinois. The filament is much thicker than any of the other heavy-duty bulbs I have tried, and that seems to be the difference. The REVEAL bulb is the only one I have tried that has lasted this long.

Posted on Jul 23, 2008

  • Phil Oellrich Aug 02, 2008

    Use a REVEAL brand DOUBLE LIFE ceiling fan bulb. The filament is much thicker than any other bulb I have tried, and so far it hasn't failed after over 3 months of constant use, even compared to 'heavy-duity' and 'vibration resistant' lamps, which only lasted 3 weeks or less. I purchased a 40 watt set of two bulbs from Home Depot in Illinois.

  • englishstar Sep 14, 2010

    The cause of the need to replace these bulbs is due to the movement of the garage door opener whilst in operation, if you think that a standard filament bulb suffers from no movement or vibration when the bulb is spiked by the power when switched on in a house; but when the garage door opens and the light is illuminated there is considerable vibration on the fillament from the door opener, thus causing it to break. The answer is: to use a bulb which contains LED's. it solved it for me.

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I finally got so disgusted with replacing bulbs every month that I replaced them with CFLs.

Solved the problem!

Posted on Jun 03, 2008

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I have tried cfls and have not gotten any better service either

Posted on Jul 22, 2008

  • dougcbus Jul 22, 2008

    I have tried cfls and have had no better luck than with incandescent bulbs

    dougcbus


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blanchettohd
  • 143 Answers

SOURCE: My light bulbs keep burning out prematurely on my garage door opener.

This is a logic board issue. You can purchase a replacement one at searspartsdirect.com. Enter in your model number and a parts list will come up. This is a fairly easy install, make sure and unplug the unit first. You will have to reprogram the remotes. Thanks BB

Posted on Sep 17, 2010

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SOURCE: My light bulbs keep burning out prematurely on my garage door opener.

I had a similar problem on my Liftmaster units made by Chamberlin. I would leave the garage door open for hours during the day so our dog and children can enter the house through our garage and laundry room. Everytime they come into the garage the Light's would go on because of the safety sensors are "tripped" at the bottom of the garage door tracks.
I turned off this feature and my lights are lasting much longer now. Over 1year in fact. To turn off and on this feature, make sure the opener light is off, then Press and Hold the Light Switch on the Wall Control Until for about 10 seconds till the light goes off. This deactivates this sensor from turning the lights on, but does NOT deactivate the sensor for Stopping the door if something is under it. Safety is still preserved.
Additionally, my door opener would vibrate while operating, and need to be aligned - I did this and also prevented the bulbs from "shaking". As we know the light bulb filaments are brittle especially after some use - this I think also helped lengthen the life of my lights on the opener.

Posted on Jul 01, 2012

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Posted on Jan 02, 2017

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1 Answer

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The contact tab in the socket is bent downwards. Disconnect the opener and pull that tab upward enough with your finger (it won't zap u unless you forgotten to unplug it!) So that when you screw the bulb in it will make contact with the bottom of your bulb. Or you may have a loose connection inside the motor housing unit. If neither of the two work it's your main logic board. Secondly if you get it to work I suggest garage opener bulbs. Their ideal for that specific purpose but any low watt bulb should be okay.

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