Re: BOBSMEDS
Back in my youth (mid 1970s when I was about 19) I was a trainee TV engineer for Rediffusion. I was once at a customers house with the back off the TV and the valve-packed chassis angled slightly downwards from its normal vertical position so I could fault find. The customer, an elderly gentleman, sat next to me watching interestedly at what I was doing. Then he did something I suppose he thought might have been useful. He said, "It was sparking a bit round about here," and put his fingers on the PCB in the high voltage area. It sparked once more, using his fingers to earth the current.
"Ow," I think he may have said (or possibly something stronger).
I looked at him, deadpan, saying something like, "I know where to poke my fingers safely. You don't. Don't do that again."
At least he learned his lesson first time around.