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

3 Answers

I have a craftsman 1/2 HP garage door opener it goes up but not down. The sensor lights are on and not flickering And are not dirty . I have to hold the door control button to make it go down. Any ideas?

Posted by on

3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 3,197 Answers

Make sure the small light on each door sensor is lit and not blinking ever so slightly. If the main light flashes 10 times when the door reverses it is a door sensor problem. If not, you may have a bad RPM sensor board which is a small printed circuit just in front of the motor. It will keep the door from closing.

Posted on Jul 12, 2010

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have the same problem with a1/2 hp opener. I disconnected the door by pulling on the emergency release when it was open. The door closes and opens manually without effort,,, the tracks are clean and it moves effortlessly. With the door closed and the opener in the open position it still acts as philb42 describes. Adjusting the up/downforce changed nothing. Adjusting the tension of chain/cable also changed nothing. I am baffled. Help !

Posted on Jul 12, 2010

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Champion:

    An expert who has answered 200 questions.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 244 Answers

If you try to close, do light bulbs on motor blink. If yes, problem is eye. Clean, alighn better or change. If not , try a little more down force

Posted on Jul 11, 2010

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Good Morning My name is Raj. I have a CRAFTSMAN Garage Door Opener 1/2 HP, model# 139.53635SRA (OR) T as the last letter. Issues: I cannot CLOSE Garage Door either with remotes or with key pad by...


If the main light flashes 10 times when the door reverses to the open position it is your door sensors. Make sure the small light on each one is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.

Sep 30, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears craftsman 1/2 hp. Door goes up with remote, but when button pushed to go down the light flashes and door doesn't move. If you push the wall mounted switch, the door goes down like normal. Works...


Check the sensors in the doorway. They should both have a small light that is lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.

Sep 07, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a chamberlin liftmaster 1/3 hp.. the chain is loose, it drags on the garage door as it goes up and down. I can only get the door to go down if I hold the button on the wall?? How do I fix this?


It sounds like a door sensor problem for one. If the main light flashes 10 times when you try to close the door the sensors are probably not pointed at one another. Tweak them a bit and check to make sure the small light on each one is lit and not flickering. If you cannot get both lights to come on you have bad sensors. The chain can be adjusted at the trolley.

Jan 12, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 1/2 HP Craftsman garage door opener. I don't have the manual anymore. The date for it is 8/99. Numbers on it were 41A4315-7D and 132C2105-1. It goes up fine. It will go down a little bit and...


If when the door reverses to the open position the main light flashes 10 times it is a door sensor problem Make sure they are pointed at one another and that the small light on each one is lit and not flickering. Tweak them a bit. If the main light doesn't flash 10 times when the door reverses it could need a little more "down force" or a bad RPM sensor board which is a small printed circuit board just in front of the motor. The "down force" control is on the rear of the motor unit.

Sep 01, 2010 | 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

My Craftsman 1/2 hp garage door opener will go up fine with the push of any button but it starts then stops when I try to push the button for it to go down. It acts like there is something in front of the...


If the main light flashes 10 times when the door stops it is a door sensor problem. Make sure the small light on each one is lit and not flickering. If the main light doesn't flash you have either a bad IR sensor which is a small printed circuit board just in front of the motor or you need to increase the down force which is a control on the rear of the motor unit.

May 10, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Myt 1/2 hp craftsmand door opener clicks and light


If the main light flashes 10 times when the door reverses it is a door sensor problem. Each sensor has a small light that needs to be lit and not flickering for them to work. They must be pointed at one another for the lights to be on. Tweak them a bit and see if the lights come on. If not you likely have a bad sensor.

Oct 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door won't open.


The most common cause of this problem is the door sensors have been bumped and misaligned. They each have a small light that should be lit and not flickering. Tweak them until they are pointed at one another and the lights are lit.

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

2 Answers

Craftsman Garage Opener /


door will not go down unless you hold down the inside botton.

Sep 14, 2008 | Sears Craftsman LiftMaster Chamberlain...

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

303 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Mike

Level 3 Expert

4336 Answers

Cindy Wells

Level 3 Expert

5102 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

Loading...