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

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While trying to reset the outside panel the remotes wont work and the door wont go down or up with the wall unit or remote. I have tried reset but its doesent work. What else can I do?

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Make sure the opener is still plugged into the outlet and that the breaker hasn't popped. If you held the smart/learn button in for 6 seconds it would erase the memory and the remotes would not work but the wall button should. Sounds like no power to the opener.

Posted on Aug 24, 2010

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2 Answers

Garage door opener won't work


Motor has overheated; the motor unit does not operate or trolleyis stuck on stop bolt = Motor unit hums briefly; RPM Sensor =Short travel 6-8" (15-20 cm).• Unplug unit to reset. Try to operate motor unit, check diagnostic code.• If it is still flashing 5 times and motor unit moves 6-8" (15-20 cm), replace RPMsensor.• If motor unit doesn't operate, motor unit is overheated. Wait 30 minutes andretry. If motor unit still will not operate replace logic board.

Aug 30, 2012 | Craftsman 3/4 Hp Garage Door Opener System...

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Remote does not work unless I am in the garage. Outside the door it will not work.


hello emar... check to be sure that the little wire antenna is hanging down from the back of the garage door opener motor. Then check it. If it still won't work from outside, install new batteries.

If that doesn't do it, remove the new batteries and use the eraser end of a common pencil to clean the battery contacts inside the remote. then reinstall the new batteries and try it again.

May 04, 2011 | liftmaster 83lm Billion Code 3-button...

1 Answer

I have a Quanton (3212) garage door opener. The


Hi,

We need to reset the opener unit on the wall. Unplug the wall unit. Wait for atleast 2 min. Then plugin again. Try the remote. This could solve your problem.

If it is still not working, you need to re-program the remote control to the power head.
Use the following steps:
Press the "PROGRAM" button on the garage door motor head unit once. A light "PROGRAM STATUS" will tell you that you have done so. The light will be on for around a min. In this time press the button on your remote. The light will turn off. Try opening the door with the remote now. Repeat if required. If this does not work, you will need to contact the dealer.

Cheers
TeaCii
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Apr 22, 2010 | Universal Garage Wireless Keyless Entry...

2 Answers

Liftmaster 1/3 HP. Remote and wireless keypad stopped working.


Sounds like the reciever for you wireless devices is not working?

Aug 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

My garage door wont go down.I habe to hold the switch down but if i let it go the door will go up again.


I have a Liftmaster garage door that won't go down unless you press and hold the wall button. The sensor lights are both on. The green light on the unit flashes unless I press the reset button. As soon as you press the wall button it flashes again and the door won't go down unless you hold the button the whole time. The remote wont' make it go down either. It begins to sometimes and retracts, but sometimes the light bulb just flashes (like it is obstructed). I tried replacing the wall switch and that did nothing. Help!

May 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Grage door blinking yellow, click and won't open with anything.


TRY RESETTING THE UNIT BY UNPLUGGING IT FOR ABOUT 5 MIN.

IF WHEN YOU PLUG IT IN THE REMOTES STILL DON'T WORK TRY TO REPROGRAM THEM.
IF STILL HAVING TROUBLE--
COUNT THE FLASHES - GOTO LIFTMASTER.COM DOWNLOAD A FREE PDF FOR A SIMILAR UNIT (THE MODEL NUMBERS ARE DIFFERENT BUT THE CODES ARE THE SAME).
HOPE THIS HELPS


Jan 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Remote only closes the garage door, will not open it


Anytime a door opens and/or closes randomly or doesn’t work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

In your case the expansion of the wall in the afternoon may be enough to cause pressure on the wire to increase the problem – works in the morning but not the afternoon.

Also after you change the batteries you need to reprogram the remotes.

HOPE THIS HELPS

Aug 08, 2008 | Sears Craftsman LiftMaster Chamberlain...

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