Refrigerator leak – Impending Doom?
What about putting the food in the freezer in a cooler temporarily and leaving the fridge door closed to keep that food cool as long as possible, and just turning the fridge off to let the evaporator coils warm up.
Then, paint the joint with a 50/50 solution of liquid dish washing soap and water. If bubbles are formed, even if it takes a long time for a bubble to form, then that's proof of a leak.
Whaddaya think about testing the joint that way?
Fritzycat: The freon in your system will evaporate completely without leaving a residue. So, if there were a leak, I can't imagine what would leak out of the fridge to leave a white residue behind. If anything, there may be some oil mist from the compressor, but that would leave a dark, oily spot and oil on the suspect joint.