[Adam]

I would think it much more likely that someone would get killed while working on a tv by getting cut from a big shard of flying glass from an imploding CRT(cathode-ray tube = picture tube), than from any kind of electrocution. The picture tubes are under vacuum, so there are something like thousands of pounds of air pressure pushing in on a picture tube (and the bigger the tube the greater the pressure), so if one breaks, the tube will actually implode under all that force, and send the bits of broken glass flying.

Some of the really early (built before WWII) tvs used a different kind of HV(high voltage) supply that produced large amounts of current as well as high voltage, one of those could possibly electrocute a person. But on most tvs the HV will give you a good jolt, but wouldn't really kill somebody.