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

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Garage door won't open or close

The other night we came in the garage and when we pushed the button to close it, we heard 2 clicks and now it won't open or close. The motor hums but won't do anything. What needs to be done?

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Is trolley jammed against stop bolt. take out to release tension on chain. may be bad circuit board. how old is unit.

Posted on Jan 15, 2009

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What does the purple button light flashing on 1/2 horsepower craftsman garage door opener


I think the adjustment mode is on.

For example, that's from Craftsman manual:

""
Setting the Force
The force setting button is located on the left panel of the motor unit. The force setting measures the amount of force required to open and close the door.
1. Locate the purple button on the left panel of the motor unit (Figure 1).
2. Push the purple button twice to enter the opener into Force Adjustment Mode (Figure 2). The LED (Indicator Light) will flash quickly.
3. Push the remote control or control console (Figure 3). The door will travel to the DOWN (close) position.

""

Actually, you should just read carefully your garage door opener unit's manual.

Craftsman Garage Door Opener Remote

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1 Answer

My Liftmaster garage door won't open or close. I hit the button and it make a sound and clicks but won't close


Remove the cover and check the drive gear. It is a white nylon gear just in front of the motor. It will be obvious if it is bad. Tell me - if it won't open how do you know it won't close?

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I have a 3/4 horsepower liftmaster garage door opener, both the remote and the wall button won't close the garage door but both will open the garage door. however, the garage door will close if I hold...


If when closing the door it reverses to the open position and the main light flashes 10 times it is a door sensor problem. Make sure the small light on each sensor is on and not flickering ever so slightly. (check closely) Tweak them a little even though they may seem to be okay. Check for 5vdc between terminals 2 and 3 on the rear of the motor unit. If there is no voltage or if it is greater than 6vdc the logic board is bad.

Sep 26, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: My craftsman 1/2 hp garage dood does not close whe...


If the main light flashes 10 times when you try to close the door it is a sensor problem. Make sure they are not flickering ever so slightly and that they are not loose on their brackets. Tweak them a little bit.

May 18, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The door opens when i push to open but when i push to close it starts to close until i stop pushing the button. When i release the button the garage door opens back and clicks 10 times


Check the door sensors. They must be pointed at one another and the small light on each one must be lit and not flickering. Tweak them a bit. If you cannot get both lights to come on you have either a bad sensor or the wiring to them is shorted or broken.

May 11, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The door opens when i push to open but when i push to close it starts to close until i stop pushing the button. when i release the button the garage door opens back and clicks 10 times


Check your door sensors. The need to be pointed at one another and make sure the small light on each one is lit and not flickering. Tweak them a bit. If you can't get both lights to come on one of your sensors has failed.

Mar 18, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door opened but will not close. I opened


I think the trolley has jammed against the bolt just in front of the motor unit. Remove the bolt and then run the door until it is closed. With the door closed locate the 'up limit' control on the side of the motor unit. Turn this 2 turns in the opposite direction of the arrow printed on the cover. Replace the bolt.

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

1 Answer

Have to hold the push button inside my garage to close garage.


You have a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not blinking. Also check the wiring.

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

1 Answer

Garage Door Opener Intermittingly Reversing


try adjusted the sensor controls on the sode of the unit other wise replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

Dec 24, 2007 | Sears Craftsman LiftMaster Chamberlain...

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