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

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After a power surge my garage door openers both quit working. The outlets are both getting power. The power surge came from outside the home.

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Power surges love logic boards. You should remove the boards and check for burnt or missing traces on the printed circuit. Especially around the small transformer.

Posted on Aug 27, 2010

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We have model ATS2113X on Fri 12/31/10 we took a power surge and now the unit will not open or close we have to do it manually. We have checked the outlet and we have power at that point. Any thoughts or...


For some reason power surges love garage door openers. The only thing I can recommend is you pull the printed circuit board and look for burnt or missing traces. Be sure to unplug the thing first. A surge protector will probably help in the future.

Jan 03, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster 2265 power is intermittent. I have checked outlets and they are fine. I have checked door opener on wall and it works as well???? Any ideas?


I would remove the logic board and check for loose connections on the printed circuit especially around the small transformer. If you have had lightening or power surges you may find burnt or missing traces.

Aug 19, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

We have Craftsman garage door openers for both doors on our double car garage. The problem is with our keypad and our remotes in the cars. The keypad and car remotes work fine for one side of the garage,...


It sounds like the logic board has quit working on the one opener. If you have had lightning or power surges you might remove the logic board and check for loose, burnt or missing traces on the printed circuit.

Jul 12, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

We just bought a new garage door opener - installed it and found out it has 'black button's and the blue button accessories of our old one won't work. so we bought extra - now it the rain and if lights...


Some things to check.

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 doesn 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.

Nov 12, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My craftsman garage door opener doesn,t work,after a power outage in the home? I don't know if the capacity is bad or the board circuit. Please help.


does it open with the wall controller? if so you may need to reprogram your remotes, look in the manual on how to do this. If not you may have got a surge that damaged the circuit board, I recommend a surge protector with your new unit.

Oct 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opens w/ Power outages


You will need to get a surge protector on this unit first of all. You will have to replace the logic board and maybe the wall button or sensors depending on how bad the surge was. Any time the power goes out the logic board can be affected by it. Thanks BB

Oct 06, 2009 | General Electric GE 13-438 Overhead Garage...

2 Answers

Garage door opener quit working, wont open, light not lit,


Upon closer inspection I found that the power board had burnt. Weve had several power surges after the ice storm and apparently one weakend the unit. Price for the board (from craftsman) is like 80.00 and not knowing what else may have took a hit I replaced whole unit for 140.00.

Feb 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Both openers stopped working at the same time but they are both plugged in to an outlet that still has power. The lights are out on the opener wall switches. Wife thought she smelled electrical smoke when...


what openers? Sears/liftmaster of last 2 years have no reset. Sure power to outlet? Try a lamp. Did a gfi trip. Did wife run both doors to overheat them. they should cool off in 15 minutes. Do you have a surge protector. Did it go bad. Some kill power when they get cooked. Did you have a lightning storm. Culd have cooked logic boards.

Jan 12, 2009 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

Power Surge - No lights on control panel


u might need to change Lightning/Power Surge Suppressor the comes inside of ur motor connected between the black and white cables of the power input of ur motor

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

1 Answer

Opener has power but does not open.


The surge probably knocked out one (or more) of the safety sensors.
There may also be a fault on any control board involved.

Each of these components (including the main drive motor) will need checking that they are still working correctly.

Only by a process of elimination will you find the fault. This can be done by checking the outputs of each sensor in turn, and testing operation.

Make sure the system is isolated before atempting this, and ensure a safe working practice is followed.
It's not worth losing fingers over!

Once the fault is found, do not use untill a replacement is fitted.

Hope this helps.

May 20, 2008 | Sears Craftsman LiftMaster Chamberlain...

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