I just bought the Pfaff Expression 150. It's supposed to have an audible alarm but I can't get it to work either. There's a place to go into for settings and the alarm setting is on so I too, don't know why mine won't work. By the time the bobbin has run out, you know it so looking at the screen doesn't help. SunQuilts, please report back when you find a solution. Kathy