I took it apart and cleaned it when I got it - I could easily have knocked something then, LOL. Thanks for all the suggestions, I'll be working on it today.fairly straight forward.
- I would deffinetly be looking at the heating system in it.
- calibrating the thermometer used
- making sure the fan is running properly
- take the darm thing apart and make sure it is good cleaned
all easy things to do, and while cleaning you may find a loose or broken connection too