I have a General Electric HTS20GBCCC fridge that, after working faithfully for over a decade, suddenly started forming a layer of ice in the bottom of the freezer compartment.
I looked it up online, and the most likely culprit seemed to be that the drain at the back of the freezer had become clogged. So, I shut the unit down, took the back panel off, thoroughly melted and cleaned out the ice buildup, and ran some baking soda and water down the drain.
Now, earlier this week, the unit is building up ice on the bottom of the freezer again. I rapidly took out the back panel this time to try to see exactly where the water was coming from and.. nothing interesting is apparent.
I'm not a repairman or engineer, just a dad on a budget trying to avoid a service call. Is there something I'm missing? Is it clogging in such a way that it does not appear clogged when I take off the panel? Please let me know, and thank you so much for your attention.