Yes. A few years ago I had to replace the temperature sensor in the fridge section. That's been the only fault in the last 31 years, apart from the odd filament lamp blowing. The previous owner used some silicone rubber to repair a crack in the drain moulding for the auto de-ice system. I don't know whether that broke of its own accord though or whether he damaged it.
I suspect that the main reasons it is still working are that the people who designed it spent perhaps twice as much as the absolute bare minimum on the parts, the people who built it weren't being worked as hard as possible and the people who sold it weren't surviving by selling the buyer a replacement every few years. These days we're proud of our increased efficiency/productivity/cost-competitiveness when we should be ashamed that the stuff we make and buy is shoddy tat.
Just my two penn'orth (says the bloke who fixes vintage stuff).