Remote isn't working, changed battery and won't work

You don't unlock anything to program the opener for the remotes. If everything is working you do this:

Press and hold the button down on the remote while you press and immediately release the smart/learn button. Do this for each remote.

Does the motor run? Does it make a noise. What actually happens?

If you mean your remotes will no longer open or close the door then it is most likely your receiver that has quit working.

Make sure the light in the wall control isn't blinking. That would be an indication that the lock function is on. To turn it off, press and hold the lock button for 3 seconds.

Sounds like the receiver portion of your logic board has quit. The wall control is hardwired and doesn't use the receiver.

The model number you give is a part number for the logic board. Does your remotes work? Is it only the wall control that isn't working?

hello emar... check to be sure that the little wire antenna is hanging down from the back of the garage door opener motor. Then check it. If it still won't work from outside, install new batteries.

If that doesn't do it, remove the new batteries and use the eraser end of a common pencil to clean the battery contacts inside the remote. then reinstall the new batteries and try it again.

Check Battery .... Possibility Corosion inside the unit Chek if you cant open the unit then check for anormal mosture or water inside the unit

The unit is in the lock mode, push and hold the lock button in for about two seconds and the green LED should stop flashing. Your remotes should work.

Make sure the code set inside the remote is the same as in the main reciving unit code.