Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo
Posted on Aug 29, 2009
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How can I can a second wall switch to open/shut my garage door

I just had my garage door and opener replaced....all fine except they did not reconnect an extra toggle switch to open/close the door that I had outside the garage at the top my our basement stairs. They just left the standard wall switch at the door leading out of the garage. Any thoughts on how I can get my second switch connected and working?

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  • Master 3,197 Answers
  • Posted on Aug 31, 2009
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Joined: Apr 29, 2009
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The 2 wires from your toggle switch need to be connected to terminals 1 and 2 on the rear of the motor unit.

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Opener has been working fine for four years. Today, when I pressed the remote to get into the garage, the door opened for a few inches, then stopped, and now the motor will not run at all, via the remote...

The problem may not be the garage door opener, To determine this, Pull the emergency release to release the door from the carriage. (The red cord that hangs from the opener) Now you can press your garage door opener to see if your motor works. If it still does not work, try unlpugging the opener from the power source for approx10 seconds. This should reset your motor.

If the motor works, the problem is with door and not the opener and you need to consult a professional who can help you with this.
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COULD BE A BAD REMOTE, I WOULD TRY ANOTHER ONE FIRST.


COULD BE A FREEZER ETC. PUTTING OUT INTERFERENCE.


OR


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

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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’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

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You will need to get a surge protector on this unit first of all. You will have to replace the logic board and maybe the wall button or sensors depending on how bad the surge was. Any time the power goes out the logic board can be affected by it. Thanks BB
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Could be a bad wall button or a smashed wire.
Anytime a door opens and/or closes by itself, or remotes work intermitantly I look for a smashed wire between the motor unit and the wall button or a bad 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.

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’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

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Anytime a door opens and/or closes by itself 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.

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’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

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