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

1 Answer

The motor turns in one direction and will not

This is for the Craftsman 53920 opener. After replacing all the gears the motor turns in one direction and will not stop. If I manually turn the stop gear until it reaches the other end it will stop but then will not go the other direction. The lamp flashes 10 times. I know the blue wires and the red wires must be on the same side of the cap but does it make a difference which site is red and which side is blue.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 3,197 Answers

It isn't the capacitor. That thing just helps the motor start running and nothing else. Red or blue wires either side just so the same color is on the same little U shaped contact.

Check the wiring to the limit switch assembly. A wire may have come off or if you had them off make sure they are on correctly. Yellow wire to the up contact - Gray wire to the center contact and Brown wire to the down contact. The lamp flashing 10 times is telling you that you have a door sensor problem.

Posted on Nov 19, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Which Keyless Entry Pad should I purchase for the Craftsman 1/2 HP garage door opener model # 53920 ?

The only models I can find that are close to yours are 53920D and 53920DM which are fairly new. They both call for keypad model 53754.

Sep 02, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

All started when the chain got loose, I tried to force it back in place and I end up braking the gear on the top of the Garage Door Opener. I replaced the main shaft that holds that gear and put...

10 beeps signal a blockage. This is what happens: the control board monitors the current absorbed by the motor; when a mechanical fault or something else is blocking the movement the motor automatically tries to overcome it by delivering more power, in the process absorbing more current; this current triggers the warning and the door system goes in danger mode - it returns the entire unit to the original state (fully closed or fully open). This happens like that so if someone gets caught it won't gets squished.
In your case the damage is internal, in the gearing between the motor and the chain sprocket - it occurred when you have tried to install the chain. You will have to completely dismantle the motor and its gearing to see what broke in it and fix it if possible. Worst case scenario: you will need a new unit.

Jun 14, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The chain came off my Craftsman 53920 garage door opener. How can I fix this problem?

When a chain comes off it is an indication of another problem. The bearing on the sprocket shaft is bad and lets the sprocket lean forward and the chain pops off. The part number you need is 41C4220A Gear and Sprocket Assembly. The chain can be loosened by the nuts on the trolley.

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

1 Answer

My Liftmaster GDO makes a clicking sound and won't open

See if the trolley is jammed against the bolt just in front of the motor unit. If so remove the bolt and then run the opener until the door is closed. While the door is closed locate the 'up limit' control which is on the side of the motor unit. Turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Remember to replace the bolt.

Jan 09, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Motor will not stop.

The wiring for the limit switch assembly is:

Yellow wire to the up limit contact

Gray wire to the center contact

Brown wire to the down limit contact

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

1 Answer

Have replaced drive gear on Craftsman GDO. Everthing engages and chain moves but door only opens 3 inches are so. Have ajusted opening cointrol on side to max and only 3 inches. When I unlatch GD from...

Loosen the chain enough that you can remove it from the pulley on top of the motor unit. Now with the door closed run the motor until the pulley turns in the clockwise direction and stops. Put the chain back on the pulley and tighten. You may have to tweak the up and down limits now.

Nov 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Just replaced drive gear, door will move in open direction only

bet your working of a lifmaster chamberland or sears craftsman there all the same thing listen you have to limit controls on left side of operator if you looking at it from behind check the limit control in the middle of those to with cover off motor, also make sure both photo eyes are lit up soilid...

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

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

113 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts


Level 3 Expert

4336 Answers

Cindy Wells

Level 3 Expert

5100 Answers

Brad Brown

Level 3 Expert

15557 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides