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

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Light bulbs constantly burn out in Chamberlain Garage Door Opener

The light bulbs constantly burn out in my unit. Upon removing the bulbs, it seems that the end of the bulb (that makes contact in the socket) is burned. Any ideas?

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Unplug the unit from the power and take a screwdriver and pull out on the center contact of the socket.

Posted on Jul 12, 2009

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1 Answer

The lightbulb in the unit burns out quickly, every 4-6 weeks. I have Lift Master 1/3 H.P. FCC ID #HBW1127, Part #41A4252-7D


You can buy bulbs designed for garage door openers. They are heavier duty. Also you should unplug the unit and remove the light bulb. Pull out on the center contact of the socket. Replace the bulb and plug the unit in.

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Unplug the unit and remove the light bulbs. Using a small screwdriver pull out on the center contact in the light socket.

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Get an electrician to measure voltage where the light is plugged in. It sounds like you have too high a voltage.

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I discovered that certain light bulbs interfere with the remote sensors. Harware stores have clear vibration reisistant bulbs for garage doors, try them instead. After spending money on a new remote, resetting remotes, and weeks of aggravation...poof.....i found it was the type of bulb I was using. Used a clear bulb and the problem went away. Hope this helps.

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Garage door opener light bulbs burning out


You can replace the socket itself. Unless there is extreme vibration this will be your best bet. If there is vibration then use some rubber washers to lessen this. You can get replacement parts at chamberlain.com. Thanks BB

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