Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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I have two 973lm remotes- how do i open them to check the battery?

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Usually look on the back,either a v small screw holding the batt com lid closed,or flip out type

Posted on Jul 04, 2010

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Is a Liftmaster 973LM remote compatable with a Sear 1.5 hp model 41A4315-7D opener?


No it is not compatable. You will need a craftsman remote or a universal remote

Sep 01, 2014 | Chamberlain 973lm Or 953cb...

1 Answer

Why does my 973LM liftmaster remote will only open door bur wont close it?


Most garage door operators (openers) have infrared safety "beams". The door won't close, even with a wired push button, if something is in the way.

May 10, 2014 | liftmaster Chamberlain Garage Door Opener...

1 Answer

I can't get the battery compartment open on my KEYPAD. Recently bought the house and former owner gave me codes but I am getting no response so need to ck battery. LiftMaster 973LM is model # on the...


There is a small hole on the bottom of the unit. Take the pointed end of a pen and press it in the small hole.....that will help pop the cover open to replace the battery.

Aug 02, 2013 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

IS LIFTMASTER 973LM COMPATIBLE WITH SEAR-CRAFTMAN 139.53635SRT MODEL?


Yes and No. The 973LM is Security + and the Craftsman is Billion code. You can program one to work with the other but none of your other remotes will then work.

Jul 08, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

We have a LiftMaster 973LM model - the remote only opens the door, but when it starts to close, it only goes down a tiny bit, then goes back up. The "Inside" remote however, you now have to press...


Check your door sensors. They must be pointed at one another and the small light on each one needs to be lit and not flickering. Tweak them a little. If you cannot get both lights to come on you have bad sensors.

Jul 07, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster 973LM. Remote opener does not work. Replaced battery - still does not work. Original owner left no manuals. Works with outside pad and inside button.


ONCE YOU REPLACE THE BATTERY YOU NEED TO REPROGAM THE REMOTE.

WATCH THE LED NEXT TO THE PROGRAM BUTTON WHILE YOU PRESS THE BUTTON ON THE REMOTE IF IT FLASHES THE REMOTE IS SENDING A SIGNAL AND SHOULD WORK.

IF IT DOESN'T FLASH THE REMOTE BATTERY MAY BE IN BACKWARDS OR THE REMOTE MAY BE BAD - IT IS NOT SENDING ANY SIGNAL AT ALL.

HOPE THIS HELPS

Jan 12, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Where is the lock button on a 973LM


The remote does not have a lock button. If you have the 3 button wall control the lock button is on it.

Aug 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Remote will not take code


If you just bought this remote you may have the wrong one for your unit.

Aug 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

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