The first thing I'd check is the atty or carto, meter it and see if it's still good. If it is try a new one anyway, maybe the one you're using isn't making good contact. If it still doesn't work give Altsmoke a call tomorrow and see what they have to say. You might also want to post this in the Altsmoke forum where more people who own SB's will see it. Perhaps someone else has some suggestions that will help.