H
hotrod
Checking for loose wires, or thinking "I'll try giving it a clean and a drop of oil" etc are not, in even an unimaginably microscopic way, "specialist activities".
BAS, you only have that mindset because you spend so much time on here. That's cool, that's your interest, I'm not knocking that, but 99.99% of the population spend their time doing *other* things.
If you were to take a step back and see it from a novice/DIYers perspective you would realise it wasn't *obvious*. I don't want to labour the point and get into a big debate with you over this anyway.