Same problem
Mine has been kicked off of few times by the kids climbing up on deck. I just snapped it back on. I think it just prys off. Problem is, the bulb is welded in place! It doesn't just unscrew, or have prongs, or something convenient. I think they're made to last, and not to require replacement. What I'm concerned about is that maybe the bulb is fine, that the problem could be in the attachment to the battery or something because on visual inspection of the filament it appears intact. I suppose i could hook up one of those voltmeters. Yes, I'll do that! If I've got juice, I suppose that means I'll have to solder another bulb on...Hopefully somebody will have a better answer, will follow this post S Blahnik