The TV set overdue all right, the most does not light up, and will not jeopardize the safety of people. The pressure cooker is different, the danger is big, just I know there are two pressure cooker accident. Dangerous things even if the probability of even small to prevent, the probability of an airplane crash is only one in three million, but people still feel that the plane than the train is not safe. So since the recommended life of the pressure cooker is 5 years, it is time to change it, a pressure cooker is not very expensive, not to mention that it can be compared with life?