My refrigerator model is ; LG TR-T632DVQ / made in Korea its been three(3) days, we noticed that the ref is not cooling as is it was before. it was below its normal temperature and our ice staring to melt in the freezer. we decided to turn it "OFF" overnight it to melt any hardened ice accumulated behind the cover. we just turn it "ON" and its still the same. what we can do to have it restore. and where i could find the bulb inside the cabinet. i just found the busted bulb inside the freezer, the remaining missing build is inside the bigger cabinet. i cant find it. thanks in advance for your expert assistance.

SOURCE: sears refrigerator

stopped up drain in the freezer remove back freezer panel and
unthaw the drain pan and the tube, the tube connects to the bottom of the metal pan, you will see a hole about the size of a dime direct the heat from the hair dryer at this hole it may take 20 min, to thaw
pour some water down the hole if it is clear of the ice the water will run to the drain pan at the bottom of the ref
if it does not keep thawing until it does

SOURCE: I have a GE Refrigerator 25 CUFT SS Side/Side

you need to remove the rear access panel inside the freezer and find the defrost heater and check this and see if the element is open,it is under and the side s of the evaporator,and if this is good you need to see if the defrost timer or adaptive defrost board is bad