"Brian Gaff (Sofa)" wrote in message
...
The older TVs of course had the chassis at half mains voltage and the
aerial socket was supposed to contain isolating capacitors, but even those
can get charged up to high voltages and also you can get leaky capacitors
after some time and this practice luckily has now almost stopped, in
favour of the switch mode psu which is then supposedly isolated by its
much smaller transformer working at the higher frequencies.

This was a Panasonic CRT TV, bought in 2000. It was widescreen, so probably
a fairly recent model as digital TV was only just about to be introduced.


I suppose the presence of live chassis in very old televisions was the
reason for the insulated aerial plugs that you used to see on TV aerial
leads. ;-)