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

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I'm renting this house, it has a Chamberlain garage opener, is ringing can you tell me why and what to do about it? thanks

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If your ringing could also be described as chirping you will need to call Sears service. Talk to your landlord first unless you want to absorb the cost.

Posted on Aug 27, 2010

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Posted on Jan 02, 2017

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How do you replace battery in chamberlain remote, garage door model 2487355


Do you have the Chamberlain 248735S garage door opener? Chamberlain doesn't have a 2487355 garage door opener; there are the 248735 and 248735S openers.

Most of the Chamberlain remotes are simple to open. Use the visor clip or a flat blade screwdriver to pry the two parts of the remote housing apart. There should be an open space on one edge of the short sides of the remote where you can insert the blade to begin separating the remote housing. Once started, you may be able to separate the rest of the housing by pulling the two sections apart with your hands. See page 32 of the user manual to see a picture of the separated remote or http://support.chamberlain.com/articles/How_To/How-do-I-remove-and-replace-the-battery-in-my-remote-control-1484145519292/?q=change+battery+in+remote&l=en_US&c=Brand%3AChamberlain&fs=Search&pn=1 for the procedure. Replace the battery with a 2032 coin cell battery, if you have the 248735S. Replace the battery with the correct replacement coin cell battery for other garage door opener models. Make sure that the side of the battery with the + faces the section of the remote housing with the buttons. The manual for the 248735S is currently here: https://www.chamberlain.com/CatalogResourcesV3/en-us/shared/files/tucmanuals/114A4256.pdf . Support and manuals for other models of Chamberlain garage door openers can be found from their support page: https://www.chamberlain.com/parts-and-support .

I hope this helps.

Cindy Wells

Jul 30, 2017 | Building Materials

1 Answer

I am renting a house, the owner did not know the code for the remote opener. How do I reset so I can reprogram? It is a craftman mode 139.18795.


If it is a wireless keypad you do this:

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.

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

1 Answer

In the past ten years I have replaced the logic boards nine times. When a storm hits with lighting I loose the board due to surges. I have a G.F.I.out let, surge protector, and I have put a grounding rod...


Chamberlain makes a surge protector that is made specifically for their openers. I would try one of those. The part number is 990LM and should be available from any service company in the yellow pages that advertises Chamberlain or Liftmaster. Unfortunately as you have learned, lightning loves logic boards.

Aug 21, 2011 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

(Chamberlain 1/2 hp Whisper Drive garage door opener) the garage mounted opener will open the door, but none of the remotes now work. batteries have been changed already. Is there a way to reprogram the...


If the wall button will operate the door up but none of the devices do then look at the wall button. Find the lock button and push it for 2 seconds and then try the remotes again. This is your vacation lock. You can get a manual at chamberlain.com. Now if the door does not open or close with the remotes you can reprogram them. Press the colored learn button on the motor head and then press the button on the remote. Repeat for each remote. If they fail to program you will need a new logic board. Thanks BB

Aug 18, 2010 | Chamberlain 1/2-HP Whisper Drive Belt...

1 Answer

Change keyless entry passcode for chamberlain model 4100 door opener


You have to press a Yellow/Purple button on the back of the garage door opener unit.
It is the LEARN button. Then enter a new four digit code into the keypad and press the enter button.
The unit should click and the lights should flash. This acknowledges it has learned the new code.

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

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