BlueStar takes the opposite approach to nearly everyone else: open burners rather than sealed ones, hand assembly, and as little electronic control as the appliance can get away with. Serious cooks choose them for exactly that reason.
Mechanically simple does not mean self-maintaining, though. Open burners need periodic servicing, igniters foul and oven thermostats drift. All of it is repairable, and there is very little on a BlueStar that cannot be put right.