The only place a modern set will kill you is the AC. If
you got a bad heart MAYBE the HV. I never heard of
anyone killed or directly injured by a TV. Its just part
of the job to get bit now & then. Almost any solid state set
the HV bleeds off in seconds. If you want to play it safe
discharge it, remove anode & run a clip lead from the
wire to ground. When you put it back together discharge
the CRT itself again first.
I got zapped probably once a week for 20 yrs then rarely
for almost 20 more yrs. HV can give you a-fibs for a short
time but they are not killers in them self. The worst
involved AC & set sent me across the room. Give me a
rope or bullet, NOT the chair !
I say this ONLY for modern TV's. Older things & stuff
like transmitters, MWO's etc can be killers so treat them
carefully.
73 Zeno