It was designed like this from the beginning because the kinescope needs high voltage but little current to give image, that makes it very deadly in case of receiving a discharge. In this case it could have been the tube or kinescope that was loaded with the high voltage and discharged by his friend giving him an electric shock.
that is to say victor those 14 milliamps that you say sends them is on, that is, the feeling was the voltajaso of those things, here they already bought gloves of up to 20 thousand volts in the course in case something happens with that thing, victor with your experience that is download if you mess with the board or it is not necessary
Only very rarely is the tube or screen charged. Before touching, it can be discharged with an insulated cable, one end to ground and the other to a well insulated screwdriver and the tip of this touch inside the pacifier and the tube is Download and lose all danger.