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

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I have a craftsman 3/4hp mod.# 139.53990srt that will open with the wall mount unit but will not open with our car remotes or our keyless pad control

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Your receiver has quit working. It is part of the logic board. The part number for the logic board is on the end of the opener where all the white wires go. It starts with 41A.

Posted on May 10, 2010

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2 Answers

Remote won't work but keyless entry does on garage door


If the light in the wall control is flashing press and hold the lock button for 3 seconds. Your remote should now work.

Jul 23, 2012 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

The hand held divice stopped working and the mounted pad light flashes quickly. The mounted pad does work.


The most likely problem here is that your wall control is bad. I would disconnect the 2 wires going to it and I think you will find your remote works. Replace the wall control.

Sep 27, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a 1/2 hp craftsman opener. Remotes work fine. Wired wall unit has a blinking light on the open button and will not work Lock pad and light pad work but not the operate pad.????


Try pressing and holding the lock button for 3 seconds to stop the light from blinking. Your wall control may be bad. Usually when that light is blinking it is the remotes that will not work.

Jul 02, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My keypad works,my remote opener does not, even


It is related. One of the buttons on your wall control is the lock button and has a lock icon on it. Press and hold it for 3 seconds. The blinking should stop and your remote should now work.

Aug 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a craftsman garage opener and my lock won't work


The wireless keypad should work but the remotes should not. I suspect a bad wall control but there is a possibility of a bad logic board. If you have a neighbor with a 3 button wall control see if they will let you borrow it to eliminate that problem. Just make sure you note which wire goes where on the back of the control. They are color coded.

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

2 Answers

Sears craftsman garage door opener


Hello,
Wire the two openers in parallel. If its wireless, set both to the same code.

Jan 19, 2008 | Computers & Internet

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