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

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Programming kepad for Sears Craftsman Garagedoor opener 1/2 hp

I have a dilemma with a Sears Craftsman Garage Door Opener Wireless Keypad (circa 2000). The Garage door opener is a brand new Sears Craftsman 1/2 hp model # 139.53920DM. I have tried the standard procedure of:1) Push learn button on back of garage door opener.2) you have 30 seconds to input 4 digit code on keypad on wall outside of garage door. push enter and hold until light goes out on back of garage door opener.3) this should set the code(unless, of course I'm doing it wrong :) Being a good masochist I have done this about a dozen times and want to put my head through a wall. Please stop me! Stop me now! :) Your help is greatly appreciated.I have read the post regarding this issue. Is there a subtlty(sic) I'm missing.

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The only procedure I have ever followed is to press the learn button and then enter the code, and not do anything else. I think your last step of holding the button until the light goes out is clearing codes as fast as you enter them. Just stop after you enter your code and let the learn mode time out on its own. That should do it.

And don't put your head through the wall. It just causes more headaches.

Posted on Feb 21, 2009

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Hello,

I had the same frustrating dilemma with my Craftsman LiftMaster garage door and Keypad, Model 139.53754-01 (dated 10/06; and has the # 315 MHz).

To resolve “the dilemma”, grab your keypad, climb up on a ladder to access the garage door opener’s motor unit. On the right side of the motor unit, remove the white plastic casing by pressing buttons on each side and pulling down. This will expose the programming area, and for our purposes, the “Learn” button.

1. On the motor unit, press and release the “Learn” button. The Learn indicator light will glow steadily for 30 seconds.

2. Within 30 seconds, enter a four digit personal identification number (PIN) of your choice on the keypad. Then press and hold the ENTER button.

3. Release the ENTER button when the motor unit lights blink. The code has been “learned”/stored/activated.

Good Luck, and I Hope this Helps!
Gail
For possible future reference:

How to change an existing, known PIN
(Changing an existing PIN can be done with the wireless remote keypad, and does not require access of the motor unit.)

From the keypad:

1. Enter the four digits of the present PIN, then press and hold the # button. The opener light will blink twice. Release the # button.

2. Enter your new 4-digit PIN and press Enter. The motor unit lights will blink once when the PIN has been “learned”/stored/activated. Test by entering the new PIN, and pressing Enter.

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