I'm not sure what it is but I think I have a problem with my fridge. For the last 2 years it's been trouble free and whisper quiet, turning on for 8-9 mins every 70-75mins, but in the last week or so its coming on for about the same 8-9mins, but on average after 38 or so minutes and now it sounds like a Mack truck at idle! Nothing is changed in the way I use the fridge or stack it, so I'm wondering what's going on. It's a Danfoss compressor with a vertical cold plate(?) inside the icebox.
I would appreciate any opinions or help to diagnose what the problem is and what I would need to do next. Thanks.