Thanks - got it done and now my previously dim-wit computer is bright again! I appreciated your tip-there's so many seemingly hidden screws that if you don't know where they are, you're in for lots of surprises. Turned out to be a three hour job, but who's counting anyway! James Hello, I've been trying for a while to get my OBC out of my M635, but haven't been 'in the know' about where all the screws are that hold everything together; this translates to "I can't get the damn thing out to change the bulb." The archives haven't really given direction in tackling this dim-wit computer's removal, so I'm hoping someone here has removed the OBC from an E24 and can give me the play-by-play on getting mine out and reinstalled. Thanks in advance, James