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

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Must hold down wall switch for the door to close all the way or it reverses back up (and neither remote will close it at all). The overhead light blinks too.

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The problem is an easy fix. There are two screws on the side of the motor which adjust up and down pressure on the door. Generally, when the problem you are describing occurs the adjustment is to decrease the down pressure about 1/4 turn.

Posted on Jun 16, 2009

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You have a problem with the door sensors. Anytime the door reverses to the open position and the main light flashes 10 times it is a sensor problem. Check your sensors and make sure the small light on each one is lit and not flickering. They must be pointed at one another to work properly. Tweak them until the light on each one is on.

Posted on Jun 16, 2009

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1 Answer

My Chamberlain 41A5389-1B 1/2HP door opener will only close via the wall push button when it is held down until door is fully closed. Will not close with remote, when using the remote it will start to...


Have you checked the tracks on both sides? If the door closes when you hold the wall button there may be an obstruction or a bad guide. This could exert enough resistance to make it stop and reverse. Holding the wall button allows it to keep going past the problem.

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I have the same problem that is listed above with my 1/2 horse power belt drive garage door opener. The lights on the sensors are both green and the alignment works, the overhead light will turn on if the...


Sounds like you have a couple problems. The opener is in the lock mode which is the reason the remotes will not work. Press and hold for 3 seconds the button on the wall control that has the icon of a padlock on it. This will unlock the opener and your remotes will work. If when you try to close the door the main light flashes 10 times when the door reverses to the open position it is a door sensor problem. One of the small lights on the sensor may be flickering ever so slightly. Tweak them a bit and try. If this isn't the case and the main light is not flashing you can try increasing the down force just a tad. This control is on the rear of the motor unit near where all those white wires go. Increase this just a bit and try. If this doesn't work you most likely have a bad RPM sensor board which is a small printed circuit board just in front of the motor. It will cause this problem.

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Okay, I'm having an issue with my Sears Craftsman garage door opener. Not exactly sure of the model number, but can dig it up if that's necessary. Symptoms: 1) Door opens fine from either wall button or...


It sounds like you have a problem with your wall button. I would remove the button from the wall and then disconnect the 2 wires on the back. Remember where they go as they are color coded. You can then momentarily touch the two wires together to check the operation. There isn't enough voltage there to bother you.

One thing to remember. If when the door reverses the main light flashes 10 times it is a door sensor problem and nothing else.

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Door won't close, with out hold down on button.


If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is lit and not blinking.

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I have a sears craftmen garage door and the control switch on the wall light keeps flashing and I need to know how to get it toa solid light and when I press the button to close the door it goes few...


When the door reverses to the open position and the main light flashes 10 times it is a door sensor problem. Usually the sensors get bumped and need to be tweaked so that they are once again pointed at one another. Each sensor has a small light that must be on for them to work. The light on one sensor stays lit all the time and the other sensor light is only on when they are pointed at one another.

The flashing light in your wall control is a separate problem. One of the buttons on the wall control has an icon of a lock. Press and hold it for 3 seconds and release. It should stop flashing.

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2 Answers

Garage Door Wont Close Craftsman 1/2 HP (1998)


What it is is the electric beams at the door are getting blinded buy the sun or out of line. They are the two black boxes on both sides of the door about a foot from the ground. Put a piece of card board in front of them not blocking the beam dut to block the sun. All that they are is safety beams for kids so they do not get hurt. If you have to move them to the top where the sun will not hit them. Sorry to say though you can not remove them all the way. Also make sure the lite on them is not blinking if so they are out of line.

Good Luck and Please Rate FixYa!

Mar 03, 2009 | Sears Craftsman LiftMaster Chamberlain...

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