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

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Lights work, door won't operate (lightening strike)

Lightening strike at our house shorted a Sears#139.53640SRT. The lights work from the remotes and the wall switch but the door won't open or close. the green LED on the PC board blinks 5 times and then remains off for 5 seconds before blinking again. This is a code for troubleshooting. What is it telling me? Lee

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SOURCE: Craftsman Garage Opener Clicks only and LED blinking 5 times

first off, hitting extra button on remote would not do anything. Is door up or down/ where is trolley that attaches to chain, by door or motor. Is is jamned against a bolt. Try a paper clip and jump from white to read terminal. Does it work. Does light bulb blink 10 times. I ignore the diagnostic lights and go by symptons. Give more info.

Posted on Feb 12, 2009

  • 10 Answers

SOURCE: garage door indicator light blinks 5 times

this probably means you have a bad photo eye if you happen to have to doors side by side may be picking up on other sides photo eye just switch sides from left to right, however if the lights are coming on but does not mean that photo eye is not bad it has a small circuit board inside of it...

Posted on Apr 05, 2009

  • 3197 Answers

SOURCE: I have a sears craftsman door opener. I replaced

There isn't a reset code. It sounds like you may be having a door sensor problem. Is the small light on each sensor lit and not blinking ever so slightly? Does your door start down and then reverse to the open position? Is the door stuck in the open position? Check to make sure the trolley isn't jammed against the bolt just in front of the motor unit. If it is then remove the bolt and run the door until closes. Then adjust the up limit on the side of the motor unit. Turn it in the opposite direction of the arrow printed on the cover about 3 turns. Be sure to then replace the bolt.

Posted on Jun 04, 2009

  • 1 Answer

SOURCE: sears craftsman 1/2 hp garage door troubleshooting

My garage door opener will start to close then stop and go back to the open position. If I put pressure on the door as it is closing sometimes it will close all the way and sometimes it will return to the open position. Can you help me. Thanks pbstation771@verizon.net

Posted on May 13, 2010

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After a lightening storm the light on my Craftsman garage door opener work. I changed the bulb but that's not the problem Thinking it may be the fuse, but where is it?


I'm guessing that some of the electronics got fried by a voltage surge.
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http://www.searspartsdirect.com/

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Have a craftsman opener model #139.53674srt1 - will not work ar all.


Make sure it is plugged in and the circuit breaker hasn't opened. If you have had lightening you need to check the logic board for burnt or missing traces on the printed circuit especially around the small transformer.

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If when the door reverses the main light flashes 10 times you have a problem with the door sensors. Make sure they are pointed at one another and the small light on each one is lit and not flickering. They must be pointed at one another for both lights to be on. If you cannot get the lights to come on you have a bad logic board.

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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.

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I moved into a new house and they had a sears craftsman 1/2hp garage door opener. I had 2 existing openers from my previous home which I want to program to this new opener...how do i do this?


With the garage door closed, press the large button on the remote. While that is pressed, press the "learn" button (ours is red) on the back of the opener unit. The indicator light on the panel will begin to blink and the opener light will flash once. At that point, release all buttons, and try out your remote!

You should be able to program your garage door remote after reading this!

I will be talking about Liftmaster and Craftsman garage door openers. The Chamberlain Corporation makes Craftsman, Chamberlain, and Sears Craftsman garage door openers. Whether you have a chain drive, a screw drive, or, a belt drive opener, they all program the same. There is a "learn" button on the machine that holds the information from the remote control. The learn button may be located on the side of the opener but, most models have them on the rear of the machine. How you can locate the button easily is to find where all of the wires are running into the machine. The learn button is usually square, but, it can be round. The colors of the buttons can be white, yellow, green, red, or the new frequency is purple.
Look at the photo above and you can see the square (red) button located on the left side of the "Logic board". The logic board is the computer that tells the opener whatto do and when to do it. It is also usually the first thing that lightening will hit in a thunder storm. I basically is a radio frequency receiver that picks up electrically transmitted signals. Lightening is an electrical signal, and a very powerful one. The little wire on the bottom right side of the logic board is the receivers antenna. DO NOT CUT IT OFF! I have have been to houses that the homeowners complained about the remote control only working when they get really close to the door. When you cut the wire you alter the frequency of the remote control, and have to replace the logic board. The logic board can cost anywhere from 85.00 up to 100.00 depending on your area. Oh, the prices i just quoted didn't include labor.
Now, for the programing part you have been waiting for. Hold down the square or round learn button that is on your opener for about 20 seconds. This clears any other remote controls that may have been in the machine. NOTE: If you loose your remote control, or, if you are going thru a divorce, you need the clear the opener so that unwanted people can no longer have access to your house. Another tip..... when you go to have your car serviced make sure you keep your remote control with you!
The reason i say this, is not because i am saying car dealerships or repairmen are crooks, but, there are exceptions to every rule. When you go to get your vehicle repaired you give the people your name, address, and your remote control. I know of one problem where a customer dropped off her Mercedes to be worked on and the mechanic had her address, and took her remote control, and went to her house that night and stole her car. Just stick it into your pocket until you get your car back.
Ok, once cleared, you take each remote control, and go to the back of the opener where the learn button is. Hold the remote control button down, and push and release the learn button. You should hear a click, and the lights on the machine may come on for a split second. When this happens, the remote control is programmed. Continue this process until all remotes are programmed. Note: The opener will only hold five remote controls, or, four remote controls and one keyless entry.

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1 Answer

I have a sears craftsman door opener. I replaced the logic board after a neighborhood lightening strike. Another recent strike has effected the new board. The door went up but won't come down. The light...


There isn't a reset code. It sounds like you may be having a door sensor problem. Is the small light on each sensor lit and not blinking ever so slightly? Does your door start down and then reverse to the open position? Is the door stuck in the open position? Check to make sure the trolley isn't jammed against the bolt just in front of the motor unit. If it is then remove the bolt and run the door until closes. Then adjust the up limit on the side of the motor unit. Turn it in the opposite direction of the arrow printed on the cover about 3 turns. Be sure to then replace the bolt.

Jun 04, 2009 | Sears Craftsman LiftMaster Chamberlain...

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