Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
Our garage door is not opening with the wall unit or remotes. When I push the wall unit I hear a click from the ceiling unit. The door operates fine manually. The green light on the ceiling unit (the SRT button I believe) keeps blinking periodically. The wall unit has a green light that is lit (not blinking). I've tried holding the SRT button since it appears it needs reset somehow but that hasn't worked. Any suggestions?
My garage door opener will start to close then stop and go back to the open position. If I put pressure on the door as it is closing sometimes it will close all the way and sometimes it will return to the open position. Can you help me. Thanks firstname.lastname@example.org
Posted on May 13, 2010
Our garage door does not close, the light on the closer blinks about 10 time everytime I try to close it. How do I reset the opener?
Posted on Sep 04, 2009
Craftsman 3/4 HP garage door opener --- door goes down but won't stay down it opens on its own. After several attempts (pushing the button) it will stay closed. What's up?
Posted on Sep 08, 2009
I've got a similar problem. The green light is flashing on the unit. I can here a click when I try either the remote or wall mount switch, but no movement.
FWIW our wall switch has a lock and a light switch and I can't get the light to go on either.
The door moves freely when disconnected from the opener.
My gut tells me the logic board is fried. What I'd really like to find is some sort of trouble shooting guide - Is anyone aware of any trouble shooting information on these lifts?
Posted on Aug 24, 2008
I got two crafstman half horsepower door openers that are within 3 years old each. just today the second one began suffering from the same problem that the first has succumbed to. I understand how to install the units in terms of proper up and down travel lengths and down and up force, but now with the down force at maximum both door openers refuse to close and send the door back up and blink the light as if the track is seized. i release the trolley and the travel seems to be fine they operate up and down by hand as much as i want.
I don't really know anything about maintenance or proper settings of the existing counterbalance parts since i didn't install those and they have existed since the time of the garage being built in the 70's. The springs are fine though and not broken. Could it be that half horsepower just isn't enough torque and it keeps tripping on overload now that they have worn in?
should i have gotten three quarter horsepower openers?
Posted on Jul 23, 2009
We replaced the battery in the transmitter but it still won't operate the door. We unplugged the opener, waited , replugged waited some more and it still does not work. What now?
Posted on Oct 28, 2009
I replaced the batteries in my opener, the garage door won't work, how do I re-set it ???
Posted on Nov 05, 2009
I had a similar problem.... the light on the opener flashed a bunch of times, and it wouldn't close.... my issue turned out to be the sensor had unplugged, so once I hooked that back up, it worked just fine.
Posted on Sep 07, 2009
Have you checked the motor power setting? the alignment of the door sensors? something blocking the sensors?
Posted on Aug 18, 2008
Replacing the main board worked for me. It cost me about $70 and took 10 minutes to replace.
Got it from http://www.1stdooropeners.com/ and received next day with 30 day guarantee.
Posted on Sep 19, 2008
Programming ... press and hold the SRT button (on the drive unit) for 6 seconds until the small indicator light beside it goes out ... this clears all codes. Take the remote, press and hold the button, the indicator light on the drive will start blinking ... press and release the SRT button, the main light on the drive unit should flash once ... then you can release the button on the remote. Remote is programmed. For the keypad, type in the 4 digit code you want to use and press and hold the enter button ... indicator light on drive unit should start flashing .... press and release the SRT button ... main light flashes ... release Enter button on keypad ... done.
Posted on Jul 07, 2010
Be absolutely sure that nothing is in the way of the sensor. Clear of any objects for example like the tip of the handle of a snow shovel.
Posted on May 09, 2009
For garage door repairs try garagedoor-guys.com
Posted on Nov 17, 2014
I have lost the directions to change my pass code on the key pad can someone help me out
Posted on Sep 19, 2008
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Posted on Jan 02, 2017
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