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

1 Answer

Sears craftsman 13953975srt works good but the range of the transmitters has reduced to 15 to 20ft.it used to work at 60ft.antenea on motor housing is ok.is there a reciever/transmitter kit that will imoprove to range?

Posted by on

Ad

1 Answer

  • 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

As you will see there are many things to check. Some of these relate to your problem and some don't.

Limited range of your remote controls could be related to radio frequency interference that comes from something in your home or in the surrounding environment. Certain electrical devices can radiate interference; this could be almost anything that is plugged into an electrical outlet.


Please keep in mind that the device can be brand new, or can be an item that has been in use for quite a while. Also, the item may continue to function properly as far as you are able to tell. The only problem with the item may be that it has started to broadcast the interference, with no other symptoms noted.


Some devices are more likely to generate interference than others. This includes TV cable, cable amplifiers, surge protectors, fluorescent lights, battery charging devices (power tools, golf carts, etc.), anything that utilizes a timer (sprinkler systems, lights, alarm systems, etc.), and a myriad of others. If the problem seems sporadic, we can safely assume that the device responsible for the interference is only being operated during these times. Again, please keep in mind that the age of the device does not determine if it is capable of broadcasting unwanted interference. Any electrical device can be the source of the problem.


The first step is replacing the battery in your remote. If the range on your remote does not improve, remove the wall control wires from the overhead unit. If the range does not improve you will likely need to replace the remote control. After replacing the remote, or if you have other remotes programmed in to the opener, and the range problem still exists, please proceed to the Power Down test.


Multiple garage doors:
If you have two garage door units and one is working just fine, you will need to start by unplugging the good unit. This will help determine if the unit with no range starts to function properly. If the range comes back to the bad unit then you will need to replace the logic board on the unit that was unplugged as it is emitting an RF signal that is over powering the other garage door opener. If the range does not improve after the “good” unit has been unplugged, replace the batteries and try programming some additional remotes to determine if the existing remotes are the issue. If the extra remotes do not have any range then you would need to replace the receiver logic board in the “bad” unit.


Power Down test:
To isolate potential sources of interference, turn the circuit breaker off to the garage and plug the garage door opener into an extension cord from another room. If the range improves, then the interference is coming from a device in the garage. If no improvement is seen follow the same procedure, this time turning off the circuit breakers to your home, with the exception of the garage and test the remote controls. If improvement is noted, turn the circuit breakers back on, one by one, until the range problem resurfaces. This will allow you to narrow down what room the problem device is in. You will have to go from there to isolate it further, by unplugging and re-plugging the items in that room.


If you are unable to determine any source of interference, then the receiver logic board in the overhead unit will need to be replaced.

Posted on Aug 25, 2010

Ad

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.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Hi... I have a Sears Craftsman Garage door Opener Model# 139.53600 Outside garage door keypad which is hard wired (electric) isn't working. However the inside keypad and the car transmitter are both...


A wireless keypad will not work with your opener. Your opener is pretty old and the new models are much safer. You might consider replacing the entire thing.

Feb 22, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Sears (Chamberlain) Liftmaster. I had to buy a new remote transmitter and it learned the code from the motor. However, now, the keypad transmitter won't work. I have done all the...


Make sure you are using the correct procedure to program the keypad.

Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.



Nov 29, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: How do you reset your car transmitters...


To program your transmitters locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and hold this button for 6 seconds and it will erase all transmitters from memory. Note please: none of them will now work. Now hold down the button on one of the remotes and then press and immediately release the smart/learn button. Do this for each remote.

May 17, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My Craftsman remote won't close my garage door


If the remote opens and closes while inside the garage but not outside , there are a few things it could be. Assuming it was working fine before..
1. weak battery in remote.
2. remote itself could be bad. (unless you have more than 1 remote acting the same)
3. Logic board in opener is going bad causing limited range.Is the wire that hangs down from the opener straightened out? That is your remote antenna.Some people have coiled or even cut it off..reducing range.
4. Less likely but this can happen- interference from another electronic device, wireless routers, cell phone, new appliances etc.. can reduce remote range. Any new electronics recently purchased?

Jan 28, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I've got a Sears/Craftsman 1/2 HP garage door opener. It's older, it was in the house when I bought it 11 years ago -- model #139.53600 The door will open when I press the pushbutton inside the garage,...


If you have the wall control with 3 buttons one of them is the lock button. It is not on the side. If you have it and the light in the wall control is flashing, press and hold the button with the lock icon for 3 seconds and release. If that is not the situation your receiver is bad. The receiver is inside the motor unit and is part of the logic board.

Dec 29, 2009 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

Need motor for craftsman table saw model rm871


Go to midlandhardware.com.For about $4.00 more than just price ofthe motor,you get the complete saw 15amp.motor with a laser guide!The table saw has a 3yr. warranty,3 extension wings,and a sturdy stand.Shipping to your door $24.00,$198.58 total.

Jul 03, 2009 | Craftsman Saws

1 Answer

New or used motor for a Craftsman 10" table saw


You can try Sears but they can be a bit pricey. I use to send out motors for a factory I worked in to a rebuilder who would even do new windings. Check in your area for a rebuilder, As for the replacement being a Sears unit they may have a similar motor in stock. Good luck.

Apr 16, 2009 | Craftsman 10" Table Saw

1 Answer

All garage door transmitter would not work


The lock is probably engaged. Look at the wall button, the green light is probably flashing. Hold down the lock button for 3 seconds and light should be solid. Your remotes should work now

Oct 24, 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

Related Topics:

127 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Glenn Mayer
Glenn Mayer

Level 2 Expert

91 Answers

Mike

Level 3 Expert

4340 Answers

Cindy Wells

Level 3 Expert

5160 Answers

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

Answer questions

Manuals & User Guides

Loading...