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

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Opener has power but does not open.

My garage was hit by lightning and knocked out two outlets. The outlet to the garage door opener seems to be ok as it still has power. The sensors on either side of the door have power also as well as the push button by the back door. Despite everything looking normal, the door does not open. When I push the button by the back door, I do hear a click coming from the opener.

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The surge probably knocked out one (or more) of the safety sensors.
There may also be a fault on any control board involved.

Each of these components (including the main drive motor) will need checking that they are still working correctly.

Only by a process of elimination will you find the fault. This can be done by checking the outputs of each sensor in turn, and testing operation.

Make sure the system is isolated before atempting this, and ensure a safe working practice is followed.
It's not worth losing fingers over!

Once the fault is found, do not use untill a replacement is fitted.

Hope this helps.

Posted on Jun 12, 2008

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