On Tue, 27 May 2014 00:00:05 +0100, J. P. Gilliver (John) wrote:

I'd have some Kapton tape (like the yellow tape visible near
the top of the video around just after 7 minutes in) over the other
small components around:

I had never heard of this "kapton" tape!

Googling, I'm still not sure what it is, but it must be a great
insulator.
http://en.wikipedia.org/wiki/Kapton