My yogurt maker stopped working properly. It couldn't heat the water above 38ยฐC (around something Fahrenheit).
I opened the thing to look inside it's guts and the plastic where screws holds that heating pad down was rotten and the heater barely made any contact with a metal plate.
I decided to chose my right to repair card and fixed it by melting the plastic, dip in the brass insert nuts and screwed back the heater and that was it.
I just saved 50โฌ with a tiny bit of work.