"Ron" wrote in message
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William Sommerwerck wrote:
It's not immediately clear how miswiring the power cord could damage the
set.


There is no "polarity", per se, to AC,


There is 'polarity' if it has an earth wire and the op connected mains
live to the sets ground.

Do we know which country the OP is in?

Ron


UK by the looks of it. I don't know of any Sony TV sets which have a mains
earth connection, and even if they did, wrong connection is unlikely to blow
any internal fuses or do other internal damage. As far as I know, Sonys use
a 'conventional' SMPS, and these care not a jot which way round the mains is
connected, or even if it has a 'live' and 'neutral' at all, as in they work
just the same when they are on a fully floating transformer safety-isolated
bench supply.

The failure of the set to work now is, in my opinion, either as a result of
the connector being wrongly wired mechanically, resulting in a blown plugtop
fuse (we have small cartridge fuses in the power plug in the UK), or just
good old Murphy's Law coincidental bad luck. Bear in mind that if the set
has run for months never going off any further than into standby, then
coming back on from a full power off condition, is the most common time for
a switcher to fail ...

Arfa