My Mum detested fridge magnets for some not clear reasons. And no overhead power lines. There was a nearby power transformer though, which on one memorable day

My Mum detested fridge magnets for some not clear reasons. And no overhead power lines. There was a nearby power transformer though, which on one memorable day burst into flames. But I remember Dad frequently complaining about reliability, and the drives keep on having to be taken down to a computer shop (back when such things existed) in down-town Lincoln (UK) to be fixed. The problems were entirely mechanical, not electronic.