Ground the probe or screwdriver, then slide it under the rubber cup shielding the... good-grief, I've forgotten which. Anode connection of the tube.
The tube/circuit could/can carry considerable charge for a significant period of time. Simply unplugging the mains power lead was not sufficient protection for a person working inside the case.
But, the case was "easily" open-able -- aside from complaints about the non-standard screw heads and difficulty separating the halves if you didn't have a tool to insert into the seam and pry them apart.
And once you were inside, things were pretty accessible. There was even an entire cottage industry documenting and recommending/selling replacements particularly for analog components on the power board, some of which were perhaps a bit under-spec-ed in the original designs and prone to noticeable deterioration as well as outright, total failure.
The problem is, not everyone would know what they were doing. At least with current tech, the worst that can happen is you ruin your computer and not your life.
One the one hand, I take your point. On the other, people wrote books documenting the whole thing and you could replace that defective capacitor yourself. (Significantly less expensive than having a technician swap the power/video board, particularly if you did not have AppleCare. And you could replace it with a more robust part, so that you were not in the same circumstances again 6 months or a year later.)
I guess with the relative decline in price of whole subsystems -- in some cases -- these days, the greater availability of those, and -- again, in some cases -- the personal safety if not always ease of swapping them out, something might be said for "increased repairability". On the other hand, I don't think the Classic Mac design rates a 0/10. Lots of things back then could kill you. These days, you can't even purchase a real chemistry set for your kids, or in some cases hardly glassware for yourself.
How many CCFL-backlit laptops are they shipping these days?
EDIT: Also, high voltages, on their own, aren't necessarily dangerous. Tesla coils can run into the tens of kilovolts, but can be perfectly safe if they're properly constructed.
good-grief, I've forgotten which
Just remember it's a CRT, so the CRs come from the C at the back of the T.That was a fun place to work. The guy who ran the place hated people touching his tools so he'd charge up a fat capacitor and drop it in his toolbox. Anyone rummaging unwarily soon learned a lesson.
Death by CRT is definitely possible in theory and the lack of real-world examples could be an issue of shoddy reporting (i.e. cardiac arrest due to electric shock minus a CRT as the specific reason) but I'd think think that across the millions and millions of CRTs sold there'd be at least one concrete report of a death.
Does anyone know of any?