I tried to use my MES 30 over the weekend. I plugged it in, turned it on, hit the temp set button and all it did was shut off but there was a loud clicking noise coming from the display. Once I unplugged it the clicking went away. I plugged it back in and it did the same thing. I went through this ten or so times until it finally let me set the temp and time. Sometime the unit would shut off while setting the temp, sometime while setting the time, and sometimes after just turning it on. After 3 or so hours of cooking I checked it and the unit had completely shut off. I restarted it and it worked fine till the ribs were done. I keep the smoker in my garage with a cover on it when not in use. I checked the electrical cord to make sure it wasn't damaged and even tried a different outlet. Any ideas of whats going on?