Mike Keitz wrote:

> New TVs also often are of live-chassis design.  Higher-end models usually
> use a switching power supply that isolates the rest of the TV, but of
> course the power supply circuit is live.

  Stick to buying those with Audio-visual input-output connectors.  This
is a
guarantee that they do *not* have a live chassis, since isolation of
signal
inputs is ridiculously expensive compared to isolation in the
(switchmode)
power supply transformer.

  Mind you, none of these sets have an earth lead any more, they are
"double-
insulated".  I'm inclined to be suspicious of how well they
double-insulate
the switchmode components but ... Who am I to question the authorities?
Once
you connect a decent earth (via the I/O plugs) they should be quite safe
though.  Their lack of an earth lead does avoid signal hum loops though
-
maybe! ( subject of one of my little muses:
  http://www.midcoast.com.au/~paulb/faq_loop.html )

  Cheers,
        Paul B.