I know how powerful compressed air is, and you're right. But I hate it when people just say "don't do this" and don't give any reasons, which is all that I ever read on the Internet about compressed air. Fact is that if you know its limits and know what you're doing it is very useful for cleaning all sorts of sensitive equipment.


To be honest though, it's fairly easy to regulate the power of compressed air (I was very gentle with the focusing screen to prevent it being blasted out of the screen holding tool) so I still think it's a viable alternative if used at low power. I've now taken about 300 shots with the camera since this happened and it's still quite happy, so I'll keep testing it rigorously over the next few days - there's no point sending it in if the fault doesn't happen again as they'll just think I'm wasting their time. And no, I wasn't planning on telling them what I'd done! [] lol