I have a 14-year-old Kenmore 106.68862891 top freezer refrigerator, with no ice maker. While there is never visible ice on the walls, floor or ceiling of the freezer, ice forms under the floor of the freezer and then drips into the frig section below, presumable during a defrost cycle.
Here's what the freezer looks like with the floor removed:
Note in the shiny aluminum tray, just behind the right rectangular opening, there is a black hole that appears to be a drainage hole, but if I prod into it with a small screwdriver, I can't find a clear opening to a drainage tube that would lead to this evaporator tray at the bottom of the refrig:
From marks on the tray, it once captured water. Now, it is perfectly dry.
Presumably the tube from the freezer to the evaporator tray is clogged, maybe due to 14 years of dust. I've tried heating with with a hair dryer on medium, and compressed air from a WD-40 size can of office duster.
Any other theories, or ideas for opening the drainage tube?
Thanks,
R1