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

1 Answer

Garage door opener


the light will not go on when door is activated from remote or switch mounted on wall in garage.

I thought the light was burned out, bulb was replaced still not working, made sure bulb was ok light will not go on.

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  • fordydan Feb 23, 2008

    I have the exact same problem with 18 yr. old sears unit.

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  • 143 Answers

Unplug the unit and look inside the socket. there is a copper lead you can bend up as it might not be getting a good contact. If that is not it you can start by replacing the socket itself from the manufacturer. If that does not do it then you will have to replace the logic board. Whether you reair or replace get a surge protector on this unit 900 joules or higher. Thanks BB

Posted on Sep 03, 2010

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Posted on Jan 02, 2017

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1 Answer

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does logic board on motor have a small pushbutton or dip slide switches? If pushbutton, push it for 10 seconds. let do. panel light stop blinking? Unit somehow got into lock mode, even though you do not have lock button. If this has stopped light from blinking, you now have to code remotes and or keypad back in. Push the little buton for 1 second and push a remote. Light bulbs on unit should blink. Take next remote (or keypad) and repeat this sequence for each one. Let me know. If you have safety beams, liftmaster should help you. w/o beams they will not support.

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