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

1 Answer

My craftsman garage door is about 8 years old. It

My craftsman garage door opener is about 8 years old. It will close just fine but it will only open about 1/3 of the way and stop. I hit the button again and it will open maybe another 1/3 and stop. Finally after starting and stopping enough it is finally open all the way. What would cause this?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 18 Answers

Make a slight adjustment to the Upward force on the side of the machine. Turn the screw a 1/4 turn each time and test, see if that helps. Also, make sure there are no obstructions or friction when the door opens and closes. Try it manually first.

Posted on Feb 19, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a 6 year old craftsman 1/2 HP model139.53985D garage door opener. Sometimes it open/closes fine - other times it opens or closes 6 inches at a time and stops. Springs are fine, worm gear is fine -...


Generally when the door is closing any problem will cause the door to reverse to the open position and stop. This is designed into it. You say your opener just stops when going up or down. This makes me think there is a bad connection somewhere and you are simply losing power. If this is so you should notice that all the small lights that are normally on go out. If this only occurs when the door is going up you may have a bad RPM sensor board. This is a small printed circuit board just in front of the motor.

Aug 31, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Have a Craftsman 1/2hp garage door opener (HBW0777 year 1994). It won't close and goes back while blinking 8 or 9 times. Transmitting sensor (red light) is blinking 3 times (even i hold the two sensor...


Anytime the main light flashes 10 times and the door reverses to the open position it is a door sensor problem. If the transmitting sensor light is blinking it is bad.

Nov 20, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener won't close. travels 6-8 in.,


If you cannot get the light on the sensor to come on by tweaking it,making sure it is pointed at the other sensor and your wiring is not broken or shorted then your sensors need to be replaced.

Jan 08, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Door opens and then closes wright away


I figured out that when I replaced the gears, I damaged the RPM sensor. It was easy to swap out the old for the new and now it works fine.

Feb 26, 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

Related Topics:

127 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Garage Doors Experts

Al Clark

Level 2 Expert

290 Answers

Cindy Wells

Level 3 Expert

4753 Answers

Pieter Vleeshouwers

Level 3 Expert

1410 Answers

Are you a Sears Garage Door Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...