Hi I can help you but I need some information first please
so if I may ask:
1-) The make CHAMBERLAIN and model ACCESS MASTER and/or number of the unit in question and do you have the manual for it?
2-) how old it might be and if you are the original owner
3-) there are 2 safety sensors on your door do they have an amber, or green light that is on steady and not flickering?
4-) can you tell me if you have a working wall control and how many remotes
5-) any flashing lights on the opener and how many times it blinks before pausing? The color of the learn button
6-) has there been any kind of disruption that may have changed the dynamics with this opener....any wiring or perhaps the kids playing there or a recent power outage
7-) are you using ONLY the equipment that came with this opener?
8-) do you have a chain......belt......or screw drive?
9-) what exactly happens when you do click the transmitter?....... the door doesn't move but you hear the motor?......it goes partial way?........reverses?
10-) do you feel that you are capable of making simple adjustments and more than mechanical in making some harder ones if necessary?
~~PLEASE CUT AND PASTE THE NUMBERED QUESTIONS AND PUT YOUR ANSWERS NEXT TO THEM~~
We can start here and with the info you provide I will add steps toward our target as we proceed by our correspondence
If by some reason a resolution to the problem just isn't possible, I will do my best to supply you with any remaining options, from what other resources I can find.
Please, since we take pride in our good reputations, and you might feel the need to choose a bad service rating, I ask that you stop and consider replying back to me with any of your concerns.
Please always allow me time to prepare information for you. In case I have to go offline I am always checking back to keep things moving and expedited.
And thank you for your help and assistance