3 - taste by hand for some hot component, touching briefly controller IC's here and there were accessible.
What flavour is "hot"? :-D
This is a "repair" forum, so i was considering people that write here as to have intention to repair, and some minimal experience
Often they have none at all. However I'm a *little* more relaxed given the low voltages that drive the screen and that the power supplies are generally speaking pretty obvious.
However this does have a CCFL backlight and there are some impressive voltages here. The wires leading to the CCFL tubes are generally well insulated, but the board can have very high voltages at points that are easily touched. Fortunately these are also generally near the power supply (or indeed part of it) and just keeping your fingers away from the while power supply is a great idea.
If the entire TV is integrated onto a single board, you need to take special note of what parts are dangerous if you're going to be poking your fingers onto devices or their heatsinks.
If you're at all unsure (and perhaps even if you're not) make sure you're wearing dry shoes, on a dry floor, not leaning or resting on anything, and with your left hand in your pocket. Oh, and have someone else around... just in case. This won't prevent an electric shock, but it will likely make it less likely to actually electrocute you. If the very worst does happen, there will be someone else present to turn off the power, see if you're OK, make sure you're breathing, start CPR if required, then call the emergency services (in that order).
DRABC