There are two fans and one compressor. The hum maybe the compressor but if the fan for the condensor coils does not work, cooling will not occur. This URl shows locations. The evaporator fan (inside the refigerator) may not turn on until the coils get to a certain temperature. I'm not sure but the new smart refigerators will do things differently. You'll need to pull the refigerator out, remove the access panel at the back bottom to get to the fan and compressor. Turn on the refigerator and the fan next to the compressure should turn on immediatly and the compressor also should be running. The fan runs just about silent. If it doesn't move try tapping it to get it to move. At first the compressor should sound normal when the fan is running. Without the fan running the compressor will be making a louder hum as the head pressures build up. If it's a bad fan you can replace it. If its the compressor, its expensive to repace and you cannot do it yourself. I couldn't tell you for certain if its the controller board. https://www.searspartsdirect.com/model/f5rndtmyda-001482/samsung-rb195acwp-xaa-00-bottom-mount-refrigerator-partssid=ps:GOOGLE:DSA+-+Category+-+All+Devices+l_D1+f7ed:75193176894:
... View more
I finally was able to peel it off. At first I tried the upper left cornor but the plastic coating of the label was peeling, not the back layer with the adhesive. A few days later I was able to get the right lower corner up a bit and the adhesive started to give. I pulled it very slowly and off it came leveing no marks. Do not use any sharp instrutment or blade whereas you'll scratch the clear coar finish on top of the stainless steel.
... View more