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

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Aux. lights do not go on when door opens

Normally, when our garage door is activated, the 2 overhead lights will go on so there is some light in the garage. Our door works fine, but even after putting in new bulbs, they do not light up. Help!

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Unplug the opener from the power and take a small screwdriver and pry out on the center contact in the light sockets. There is always the chance the relay that controls the lights may be bad but this is the common fix.

Posted on Oct 07, 2009

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Posted on Jan 02, 2017

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Entrance light on Lift Master garage door opener won't stay on when door is opened ?


Light Feature
Activate the Light Feature
  1. Close the garage door.
  2. Start with the garage door opener lights "ON".
  3. Press and hold the light button for 10 seconds. (Upon pressing the light button, the lights will immediately turn off and come on 10 seconds later.)
Deactivate the Light Feature
  1. Close the garage door.
  2. Start with the garage door opener lights "OFF".
  3. Press and hold the light button for 10 seconds. (Upon pressing the light button, the lights will immediately turn on and go off 10 seconds later.)
Light Timer
Press the Light button to turn the opener light on or off. It will not control the opener lights when the door is in motion. If you turn it on and then activate the opener, the light will remain on for 4-1/2 minutes. Press again to turn it off sooner. The 4-1/2 minute interval can be changed to 1-1/2, 2-1/2, or 3-1/2 minutes as follows:
  1. Press and hold the Lock button until the light blinks (about 10 seconds).
  2. A single blink indicates that the timer is reset to 1-1/2 minutes.
  3. Repeat the procedure and the light will blink twice, resetting the timer to 2-1/2 minutes.
  4. Repeat again for a 3-1/2 minute interval, etc., up to a maximum of four blinks and 4-1/2 minutes.

Oct 20, 2017 | Building Materials

2 Answers

Why does the overhead light on my garage door opener go off & on without any reason, day or night, even when door is not in use?


There's a gremlin living in your overhead light.....lol. The circuit board in the opener has the timer for the light. There's a component that's beginning to fail on it. Replace the circuit board.

Jun 29, 2015 | Craftsman Garage Door Opener 1/2 HP Chain...

1 Answer

Chamberlain garage door will not close


If your garage door will not close from the open position and reverses immediately or part way down there is a safety beam problem, usually there is a safety light on the opener which will flash when the safety beam is activated or faulty. Clean the photo beams with a clean damp cloth, check if the door now operates, if it does not, check that the safety beams have not become misaligned, there is normally a light on one of the sensors that indicates when they are correctly aligned, if the light is on it means they are not aligned, the light off indicates they are aligned. If they are not aligned try adjusting them, if this does not work they are probably faulty.
Further reading garage door opener repair guide

Jun 16, 2012 | Chamberlain Power Drive 1/2 HP Chain Drive...

1 Answer

Door stopped working when I was trying to adjust the door. Blinking yellow light on the overhead unit


The motor has a thermal overload that will turn it off it if starts to overheat. Normally a 15 or 20 minute rest and it will automatically reset. The blinking yellow light may be sending a code. If it blinks 5 times and then pauses and then repeats it is the overload.

Feb 10, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Overhead light flashes and clicks when i push remote or button. I have to hold down the button for the door to come down completely. Sensors have been changed and light up appropriately.


If the overhead light flashes 10 times and the door reverses to the open position it is a door sensor problem. Make sure the lights on one of the sensors is not blinking ever so slightly or the light is dimmer than the opposite one. Check to make sure they are connected properly. The solid white wires go to terminal #2 and the wires with the black stripe go to terminal #3.

Aug 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Overhead light stays on all the time on craftsman garage door opener


Hello. If the light stays on all the time check these:
A. The light time delay on the opener will keep the light on for approximately 4-1/2 minutes after the system has be activated, then will turn the light off automatically.

B. If the opener has a worklight switch (which is supplied only with a four-function wall console), slide the switch to "OFF" position.

C. If the opener has a pedestrian switch (which is supplied only with a four-function wall console), the light will stay on for 4-1/2 minutes after the pedestrian door has been opened.

Mar 31, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman 1/2 HP garage door opener with one green and one yellow


It sounds like a logic board problem to me. I would remove the board and look for bad connections especially around that small transformer.

Aug 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Lights on overhead unit on garage door opener will not go off


This is not too uncommon. What tripped the breaker in your house also got to one of the relays on the logic board of your opener. The only cure I know of is a new logic board.

Jun 18, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener won't open garage door


Remove the cover and take a look at the drive gear. It sounds like it is stripped.

May 23, 2009 | Sears Craftsman LiftMaster Chamberlain...

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