I have what I think is the Redi-Chek ET-73 and plugged in my Smoker probe and put it in my heated up smoker. I got the LLL output which usually means low reading or bad probe. After 20 minutes it never started working including turning on/off and reseating the probe. So I plugged it into the Food socket and the Smoker probe works on that side. So whats the deal? I could order another probe but that probe seems to work...???