If you fix one thing, something else is going to break on it. The one exception was when we had a 30 year-old chest type Sears Coldspot freezer. My mother called Sears and they came out and told her it was a minor, inexpensive part, easily replaced but due to the age of the freezer it would take three weeks to get it. My mother farmed out the frozen food to various sisters and brothers and waited for the part. It did come in when it was supposed to, was fixed inexpensively, and it chugged on for another 10 years.