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

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Chamberlain 1/2hp Operator won't work after electrical storm

Electrical storm flipped several breakers on my panel. Reset them. But garage door opener on one of my doors will not work now. Wall button turns on the light but no operation of motor. Remote button does not do anything at all now.

What is the most likely cause of the problem? Is it repairable or just cheaper to install a new unit?


Thanks

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Sounds like the circuit board got zapped. You could price a new board or take it apart and check the components if you know how, but normal mortals would just buy a new unit.

Posted on Jun 01, 2009

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I have a Craftsman garage door opener Model# 139-18059. It is a wireless keypad and wireless remotes. I go through everything the tell me and stilll cannot get door to open or close. Is there a button...


Does the wall control not work? Have you checked the house circuit breaker? Is there power to the opener? Motors very rarely go bad. If you have had a power surge or electrical storms I would suspect the logic board. You can pull this board and check for missing traces on the printed circuit.

Jun 26, 2011 | Sears Craftsman LiftMaster Chamberlain...

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How to reset code for keypad after reattaching wires


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.


Mar 05, 2011 | Sears Craftsman LiftMaster Chamberlain...

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I have two craftsman garage door openers and the remotes, wireless key panel and my built-in car remote all stopped working for both openers. I have tried resetting the remotes, but the openers do not...


If this all happened at the same time you have either had an electrical storm that cooked your logic boards or you have something in the house or garage that is interfering with the radio signal. If you added something new it should be obvious but this can happen at any time with older electrical gadgets. Check the LED on the rear of the motor unit. If it is blinking rapidly it is showing interference. Start unplugging until it quits. It could also be one of the remotes. Watch the LED and pull the batteries from them. Random blinking of the LED is normal.

Sep 26, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My light won't go off on my craftsman 1/2 hp garage door opener.


This is usually caused by electrical storms. The light is controlled by a relay on the logic board and the contacts must get welded.

Sep 23, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

AFTER A RECENT ELECTRICAL STORM AND A NEARBY LIGHTENING STRIKE THE GFI PLUG BLEW. ONCE RESET THE GARAGE DOOR MOTOR WILL NOT FUNCTION. LIGHTS COME ON - I RESET THE REMOTES BUT NOTHING . AT FIRST THE MOTOR...


I would pull the logic board and check for burnt or missing traces on the printed circuit. Garage door openers hate electrical storms. I really doubt it got to your start capacitor.

Jun 04, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Hi I have a chamberlin lift master Professional formula 1 garage door opener and the lights use to time out but now they stay on.


The relay that controls the lights is most likely bad. This is a unfortunately a common problem after electrical storms.

Sep 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The light on my chamberlain '94 wont turn off.


This is a fairly common complaint after an electrical storm. Seems a surge of electricity messes up the relay that control the light. The repair is expensive (logic board) and most people just unscrew the light bulb.

Aug 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Same problem same day


Unfortunately there isn't a reset switch but I would pull the logic board and look for burnt or missing traces on the printed circuit board. Electronics do not like lightning.

Jul 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

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Courtesy light not going off


This is usually caused by electrical storms. Electrical surges seem to get to the small relays that control the light and fry them.

Jun 29, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door opener stoped working after a storm.


TRY TO REPROGRAM THE REMOTES TO THE OPENER - THESE UNITS CAN LOSE THE MEMORY DURING STORMS.

I WOULD SUGGEST ADDING A SURGE PROTECTOR AT THE PLUG IN TO PREVENT DAMAGE TO YOUR UNIT IN THE FUTURE.

Apr 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

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