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

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Liftmaster 2265 power is intermittent. I have checked outlets and they are fine. I have checked door opener on wall and it works as well???? Any ideas?

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I would remove the logic board and check for loose connections on the printed circuit especially around the small transformer. If you have had lightening or power surges you may find burnt or missing traces.

Posted on Aug 19, 2010


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MarantedMLine 4500. Door closed properly using wall unit. Now will not open and light will not work No light on unit nor on wall unit. Checked that power is to outlet to which opener is connected.

Blown circuit board. Trying to finds someone with a new board can be a challenge.. If you do replace the opener, buy a belt drive anything made by Chamberlain which includes Craftsman and the best opener Liftmaster are your best openers.

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3 flashes is the code for a bad wall control or the wire to it is shorted.

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Anytime a door opens and/or closes randomly or doesn't work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.

Or a remote in someone

Nov 10, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Intermittent remote trouble

Your wall control is hard wired and doesn't use the receiver portion of the logic board. The remotes do. Your receiver is going bad.

Jan 12, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Garage door opener is not working . What is there to say? I connot electronicly open my garage door. I have already checked the batteries, and they are OK

If the wall control is not working along with your remotes you need to check for basic power to the unit. Check the house circuit breaker and the outlet. Plug a lamp into the outlet to see if you have power.

Dec 08, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My liftmaster 2265 1/2 hp remote does not close

If the door starts to close and the main light flashes 10 times and the door reverses to the open position it is a problem with the door sensors. Make sure they are pointed at one another and they each have a small light that must be on and not flickering.

If it starts to close but reverses and the main light does not flash 10 times it is possibly the RPM sensor which is a small printed circuit board just in front of the motor.

Nov 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

L.E.D lights at back constantly blinking, garage door won't open

If the LED is blinking randomly it is normal. If it is blinking rapidly you have interference from somewhere. To eliminate any interference start unplugging anything electrical and watch the LED. Some things will interfere that you wouldn't even think of like a heater in an aquarium. Check everything especially in the garage.

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Liftmaster pro garage door opener opens randomly


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