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

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I have a Promax garage door opener and the light attached to it will not turn off now. Before, it would stay on after opening and closing the door for a few minutes, but now it just stays on. How can I fix this?

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  • sparkyg Oct 01, 2008

    I have a Sears 139-655000 and the light will not shut off. I am looking for suggestions for repair.

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This is a logic board issue and you will have to replace it to fix it. You can get a new one at genie.com, overheaddoor.com or wayne-dalton.com. Thanks BB

Posted on Sep 03, 2010

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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

The light on the Garage door blinks but doesn't stay on.


Three blinking lights & door won't close by Candi
(Winston-Salem, NC)
Garage door will not open and close with remotes. Three blinking lights occur when we try to close door. What does this mean? It is a Linear unit.
I will assume you mean that your garage door will open with your remote but will not close. It should close if you press and hold the wall control button until the door is fully closed.
If that is the case, the 3 blinking lights indicate that your garage door's infrared safety beams are not properly aligned.
1) Check that the operator has power. The green lights on the sender and receiver should be lit.
2) If the receiver's green light is on, but the red light is off, the receiver has power but is not detecting the infrared beam from the sender. The red light might flash when the beam is partially detected. This can be caused by
mis-alignment or something blocking the beam.
Adjust the safety beam sender and receiver while watching the receiver's red light (stay out of the beam while aligning it). When the red light stays on, the beam is aligned and your garage door should operate normally.
http://www.linearcorp.com/pdf/manuals/LCO75.pdf
NOTE: If the receiver's red light remains off, check for:
1) Dirt on the receiver's lens,
2) Sunlight shining into the receiver's lens,
3) A short in the safety beam wiring (from staples or at the operator terminals).

Dec 02, 2013 | liftmaster Garage Door 1/2 Hp

3 Answers

Garage door light blinks but doesn't stay on


Three blinking lights & door won't close by Candi
(Winston-Salem, NC)
Garage door will not open and close with remotes. Three blinking lights occur when we try to close door. What does this mean? It is a Linear unit.

I will assume you mean that your garage door will open with your remote but will not close. It should close if you press and hold the wall control button until the door is fully closed.

If that is the case, the 3 blinking lights indicate that your garage door's infrared safety beams are not properly aligned.

1) Check that the operator has power. The green lights on the sender and receiver should be lit.

2) If the receiver's green light is on, but the red light is off, the receiver has power but is not detecting the infrared beam from the sender. The red light might flash when the beam is partially detected. This can be caused by
mis-alignment or something blocking the beam.

Adjust the safety beam sender and receiver while watching the receiver's red light (stay out of the beam while aligning it). When the red light stays on, the beam is aligned and your garage door should operate normally.

http://www.linearcorp.com/pdf/manuals/LCO75.pdf

NOTE: If the receiver's red light remains off, check for:

1) Dirt on the receiver's lens,

2) Sunlight shining into the receiver's lens,

3) A short in the safety beam wiring (from staples or at the operator terminals).
http://www.linearcorp.com/pdf/manuals/LCO75.pdf

Dec 02, 2013 | liftmaster Garage Door 1/2 Hp

1 Answer

Gene garage door openers


are you sure that it doesn't just stay on for 30 seconds to one minute and then shut off? if it stays on all the time, the light switch has been manually turned on and you need to turn it onto 'automatic'

Mar 18, 2013 | Genie 1/2 HP DC CHAIN MOTOR

1 Answer

The light on my craftsmans model 139.53990 garage door opener comes on when the door is opened but only stays on about 5 seconds. It lights when closed and stays on the normal length of time.


Very strange but you can try this. Unplug the opener and remove the light bulb. Use a small screwdriver and pry out on the center contact in the light socket. Replace the bulb and plug the opener in.

Aug 07, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My mom & I each have a Craftsman garage door opener at our respective homes & live @ 15 minutes apart. Our openers are about 13 to 14 yrs old. The past two yrs. we've both had the same problem. ...


If the main light flashes 10 times when the door reverses to the open position it is a door sensor problem. Make sure both lights on the sensors stay on and don't flicker while the door is moving and the sensors are firmly attached so they don't move. Tweak them just a bit.

Nov 09, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door opens after closing


If the main light flashes 10 times when the door reverses it is a door sensor problem but if the door is hitting the floor and reversing and the main light is not flashing then the door is closing too far and the safety thinks it has hit something. On the side of the motor unit you will find 2 controls. One of these is the 'down limit'. Turn this in the opposite direction of the arrow printed on the cover until the door closes but does not reverse.

Jul 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door closing


HAVE YOU ADJUSTED THE SENSITIVITY??

ALSO SPRAY THE SPRING WITH A LITTLE WD-40 SOMETIMES THEY BIND AS THE DOOR CLOSES.

Mar 29, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage light turns on without disturbance.


Hello,
Most likely the unit has a sensor that activates the light when you walk around or open the door.
if no one is in the room it should go off in 5 minutes, but if someone goes back in there to check it goes back on again.

Under the light cover there should be a switch where you can disable it or make it less sensitive.

Sep 21, 2008 | Sears Craftsman LiftMaster Chamberlain...

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