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

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Electrical Problem with Sears opener

When I tried to operate the opener, there was an electrical flash and some smoke. Now the unit won't operate at all. The wall button isn't lit. Visual inspection of the logic board, motor, terminal block, and capacitor showed nothing. How can I determine which component is bad?

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Hi there, i would suggest a break point test with a voltage test needle. Im sure that this electrical surge has torched your power supply board. this is the reason for the non operative state.

Posted on Feb 17, 2009

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To program the keypad, first unplug the garage door opener from the electrical outlet. Next, remove the nameplate from the console that the keypad plugs into and locate the program/operate switch. Flip the switch to program. Next, enter your desired four-digit PIN number into the keypad. Slide the switch back to operate and plug the garage door opener back in. The keypad should be programmed.

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IF REPROGRAMMING DOESN’T HELP TRY REPLACING THE BATTERIES IN THE REMOTES AND THEN REPROGRAM.

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