Craftsman Door Opener problem
Just bought a townhouse that has a Craftsman 1/3 hp opener, model HBWO777. It works fine, but the lightbulb on the opener does not light up. Put new bulb in, still no luck. The pad on the wall is the three button. One says "Vacation", the other "Work Light" and the big one is for opening the door. There is a little red light that comes on behind the pad that says "Vacation" but nothing lights up behind the one that says "Work Light". There are four terminals with wires running to the opener on the back of unit. Any help is appreciated.