You never know, if your MiniMoog will last for decades or if it breaks down the next day. But the good news is: any electronics engineer/technician with a soldering iron and an oscilloscope can fix almost any problem it might create.
About my history with MiniMoog: I wouldn’t be here if I hadn’t been able to test drive one in early '80s (the setup also had an Apple II/Alpha Syntauri system). This experience eventually drove me to study audio engineering, electronics and computer science.