The refrig is Model ET8HKXM003 and Serial # E54044751 Manufactured 10/05. It is type 18TFA. The Temp is currently set on 3 (normal). The freezer appears to be leaking down into the refrig as I find water on the top shelf of the refrig every few days. Food in the freezer stays frozen and the refrig seems to be the right temp. Could smthg in the defrost mechanism be clogged? Any help will be appreciated. Thank you!

The drain tube on the machine has frozen in the freezer section
remove the back panel and with a hair dryer thaw the drain tube
you will see an alluminum sheild with a 1/2 inch hole in the bottom of the shield this is where you want to direct the heat
it may take 20-30- mins to unfreeze it to make sure it is unfrozen pour som water into the valley of the sheild if it runs into the drain pan it is unthawed if it pools up keep unthawing