|MadSci Network: Engineering|
Two possibilities: First, beneath the cooling coils there should be a pan - probably plastic with possibly a small "damper" at the rear to allow you to adjust the amount of cold air going from the freezer section to the refer section. If that is missing, which it usually is if someone gave you that refer, then there should be slots in the side walls where that drip pan/damper should be. If that's true, a sheet of thin, rigid plastic that is wide enough to fit those slots and a little shorter than the depth of the refrigerator should solve the problem. But, if at one time it worked correctly, then I would suspect a dirty condenser. That's that black wire maze at the back or under the refer that gets clogged with lint and pet hair so it can't get the heat out as it should. But, I'd go with guess #1.
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