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

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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 DID HAVE A SOFT HUM- NOW NOTHING. I SUSPECT THE STARTING CAPACITOR. WILL I BE WASTING MY TIME AND MONEY OR SHOULD I BUY A NEW ONE?

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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.

Posted on Jun 04, 2010

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Light came back on in older 18cu.ft. Frigidaire (freezer on top) refrigerator after lightening storm tripped a GFI plug on the circuit but no cooling or freezing No sound of motor running.


As the light works the supply is obviously ok.

It would seem to be time to find the reset button if there is one and try pushing that. If no reset button or it doesn't work the circuit and supply will need tracing through with a meter and/or a test lamp in order to discover the fault.

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? 3:10
https://www.youtube.com/watch?v=Zq_CxeTXoSM
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Might have taken a lightening strike, knocked out GFCI that was on the circuit that garage door opener was on. When I ... And sometimes after it happens it takes 30 or so seconds before the opener will work again. ... The keypad unit worked well butneither the homelink or the remote units worked.

Garage Door Openers - Lightning Strike - Forum - Bob Vila

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1 Answer

The power went out in a storm,now my garage door opener won't work.The learn button keeps blinking


There is an chance you circuit board got a surge. It may need replaced. First try unplugging it for 30 sec and plugging it back in. Garages are generally protected by a gfi plug. Sometime with power outages these trip. Resetting it can also be an easy fix.

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1 Answer

I have a panosonic plasma 42 inch tv. After a storm all I get when I turn it on is black and white static but all the menus display fine


Look to see if the rear video/audio inputs work (DVD etc) and if they do the damage is at the tuner in the set (nearby lightening can discharge into the cable or wires for signal.)

If using a box (cable or satellite) it may have took the hit.

A good idea if lightening storm is to not only unplug set (static discharge can come in via the power cord also) but disconnect signal source from set.

I have in extreme cases seen a nearby strike get in via the power lines and destroy almost every appliance plugged in even if not on.

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I had a lightening strike at my home. Since then, the garage door does not function with wall switch or remotes. when i press the switch, light comes ON on the door opener and i hear a click but nothing...


Well, I don't think that disconnecting the garage door from the garage door opener would affect function.

The lightning strike could have destroyed the circuitry inside the garage door opener, seeing that it won't operate with the wall switch or remotes.

It's likely that a board was fried by the lightning which would render the garage door inoperable.

Aug 08, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

After a lightning storm, my LIftmaster Formula 1 garage door opener will not close without continually holding down the garage door button on the wall. If you push the button once and then let go it will...


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.

Jun 13, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman GDO 1/2 HP - Remotes not working after storm


sounds like it blew the reciever crystal buy another and return the motor thats fried 4 refund

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

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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