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

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Garage door opened, won't close

I have a 1/2 hp Craftsman opener model 139.53635SRT1. Motor worked fine to raise door, when remote is pushed to lower door nothing happens. Electric is working, no obstructions. I waited 15 minutes to see if the overload protection has tripped. (waited and tried several times). When press the wall control the light on the opener comes on and the unit clicks once, but nothing. The same thing happens when I try the remotes.

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  • justringo326 Jan 17, 2009

    I have the same problem, my craftsman garage door opened and now it wont go. The electric is still working and the lights still work. It makes a slight "buzz" sound and then nothing. Just like the other problem - there are no obstructions or rail issues that I can see. I tried holding the wall unit button downn - but did not work.

  • j_handloser Mar 29, 2009

    i have the same problem but holding the button will not bring the door down buoght a new switch for inside the garage that didn't work either, eyes are green unless you put something in the way then 1 green light goes out the other stays on door is fine manually lighs go on no motor noise just a click not hung up on the stop screw gears are good need help can't afford to replace everything.

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If you can press and hold the wall button and the door will go down, you have a photo eye issue. Check the photo eyes at the bottom of the door.

Posted on Jan 17, 2009

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New garage door opener 3/4 HP srew Sears. Door open ok, but when close the door went down to the ground and reverse to open. How can I adjust it.

Thanks,
Jay

Posted on Jan 21, 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.

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