My tech and I have been battling an intermittent problem with my Samsung fridge. Intermittently, the freezer, fridge section, or both, will stop cooling. Compressor continues to run, fans run, etc. Unplug for 5 minutes and restarting has no effect. After about a day or so, the fridge will return to 34 degrees and shortly after that the freezer will return to 4 below. It will continue to work perfectly for a day, or a couple of weeks, or months. Since this problem began, the compressor has been noisy (at least to me), buzzing, gurgling and generally making strange noise. This continues whether it is cooling or not. During conversations with Samsung, my tech has repaired a leak in one of the copper lines and added freon, changed the inverter valve (did nothing), and finally Samsung said to replace the entire sealed system. My tech is reluctant to do this because he isn't sure it needs to be done, plus he doesn't want me to have to spend all of that money and the problem not be solved. (The sealed system is still under warranty, but my tech no longer does Samsung warranty work). The nearest Samsung repair person is 75 miles away, and I don't have the stomach to restart the whole process with someone new, plus, I know everything will be working just fine when the Samsung guy arrives. I'm about to put it out on the curb for trash pickup but thought I would try here for some suggestions that my tech might try. Thanks in advance for any and all suggestions!