Dogs and Netball make me happy humans make my head hurt shirt

In a vast majority of instances the focus will not be on replaceable components but replaceable assemblies which, by necessity, will have to be returned to the manufacturer for refurbishing and resale. You'd take it back to the manufacturer or their agent, only to be told that they didn't sell parts any more. Planned obsolescence makes it either ridiculously expensive or just impossible to fix so many things.