craftsman garage door opener- doesn't work!!
model # 139.53681B
the wall unit works just fine.it looks like a doorbell. the light on it is green.
the sensor lights are yellow and green.
the remote does not work. i have replaced the battery,
there are 3 buttons on the remote; a large one, and then to smaller circular ones, 2 different sizes
how can i fix it... or can i?