Interesting comments,
May I say that I was talking about those that repair appliances as their normal day job, not those that "repair" their own appliances.

Having said that, during my apprenticeship as an Electrician, I was required to be able diagnose and repair faults in most common household appliances, to pass the 3rd Qualifying Exam.

This included Stoves, Fridges, Heaters of varying types, Air Con gear, Washing Machines, Clothes Driers, Ceiling Fans and other bits of junk.