I think your receiver has quit. The remote and the keypad both require a receiver but the wall button does not. Try removing the wires from the wall button at terminals 1 and 2 and see if your remote works. If not, you have a bad logic board.

I have a 1/2 hp craftsman garage door opener that is about nine years old. It worked fine until a month ago. The first thing i noticed was the wireless keypad quit working. Changed the battery and it still would not work. Another thing i noticed was that, even tho the sensor beams were operable (green light on), the light on the motor did not come on when i walked in the garage breaking the beam. Nor did i hear the relay clicking as before. Is this and the keypad problem related? All other functions of the opener, including the light (when the door opens)and remotes work ok. What is the fix?

I have a key pad for my garage door opener that is not working . I do not know password and would like to know how to reset to put in new password .

If it is a wireless keypad do this:

Locate the smart/learn button on the rear of the motor unit near where all those white wires go. Press and immediately release this and then walk over to the keypad and key in any 4 digit code you like and press enter.

Please note that you don't give a manufacturer or model number. This information is pure assumption.