I have a kenmore side by side refrigerator. Water keeps dripping into the bottom inside area of the frezzer. It then frezzes, but contiues to drip thus leaking onto my floor. A repair shop said there is a drain hole at the inside bottom along the back which is clogged, and to use a hair dryer to thaw it out. I don't see the hole, but I held a hairdryer on the area where the ice begins about 10 min. and nothing has changed.

You need to clean it. You need to first unplug it. Anyway, you will have to remove the cover to the freezer after unplugging unit. Then wash out drain pan with hot, soapy water, and blow out with hose nozzle. Then pull out from wall and remove rear cover so you can clean the coils, condenser fan blades, and drain pan with spray soap and a hose nozzle. Wash out well and use a wet-vac to get water up. When I have a hand truck handy I would always unload the unit and take it outside and wash it all out from top to bottom with bleach and water. It's the best way to get it like new again. Probably, the drain is gunked up with food and dirt. I usually find peas or something like that in the drains. Clean it all out well because a dirty unit will burn up the compressor quickly.