Never take a classic Mac to a TV Repair Shop for monitor/crt work. 1) They will charge you an arm, a leg and your first born just to look at it. 2) Tell you that they have to special order parts which will come from Nowhereneccastan! 3) they do not know how to work on a Mac Classic Monitor, they are different from a typical CRT TV set like the Model T Ford is different like a Lexus Q80.
It is better to do it yourself or get a Mac Pro like Uniserver or TechKnight to help you out. Electricity is dangerous but if you respect it, it will respect you.
Also... the movement of the Earth has nothing to do with CRTs to be deathly to touch. Its the caps on the analog board still being charged when you turn it off and when something touches the CRT Anode Wire clip, electricity likes to go to the quickest path to ground - usually through your body if you're that unlucky.