Got a 3 years old 40MES used around 40-50 hours. I was smoking some meat a few weeks ago, as I emptying the tray I noticed that the element stopped working. Both the green and red lights are lid, but no heat. So I finally got the replacement element. Install it like the instruction say. I tested it to make sure it was working, nothing. Lights are lid, but I got no heat. I made sure all the connections are secured. What else should I check?