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

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Garage door opener light bulbs burning out

I have a new craftsman model #139.53985d Garage door opener. I have to keep replacing the light bulb on one of the 2 sided opener continually. It keeps going out. I have tried normal to heavy duty bulbs. Only burning out on one side. What could cause this. It worked for a while when we first had it installed. Now it is continually burning out.
Thank you

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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

Posted on Sep 03, 2010

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I had that problem also. I even tried the bulbs designed for rugged use, but they too burned out quickly. I eventually chnaged to the CFL florescent screw in bulbs, and they have worked well.

Posted on Jan 04, 2011

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blanchettohd
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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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