I have a Liftmaster Professional 3280 Opener and the lights on the unit don't work. I've changed the bulbs and they still won't stay on when the door opener is activated. If I turn the bulbs slightly they will go on but the next time I operate the opener, they won't go on. Maybe I have a short in the wire or the contacts at the bulb base need to be raised? Any ideas?
Thank You
VB102763
Thank You
VB102763
