Water drips from the back center in the cool box directly under the freezer box. I suspect that the defroster unit is not evaporating the resulting water??? How can I further troubleshoot to determine the cause exactly? I have studied the parts exploded diagram and went to the refrigerator but I cannot determine exactly where the evaporator system is located and thus how to get to it? - to see it - to test it - and if I could, what tests should I perform?

Thanks for some clues - I am generally very handy but this one has me stumped.

Thanks - Is that how I access the parts of the defroster? ... from the back? What can be done to help prevent it from freezing over and plugging again?