I think you can forget about any possibility of a repair being
succesful. Sony shadowmask tubes are particularly susceptible to
damage after being dropped.

Sony Trinitron picture tubes do not employ a shadow mask. They employ an
aperture grille. There's a substantially big difference between the two.

See this account from a customer who had his Sony TV damaged during a
furniture removal.
http://www.epinions.com/content_109848792708

How convenient in that you disregard various details in the story which tells
us more about what happened and ultimately puts the credibility of your claim
into question. You didn't even properly specify what was going on which led to
the damage. This wasn't a mere furniture removal. This was a transcontinental
move from California to North Carolina. That's literally a move from the west
coast to the east coast of the United States! That's one hell of a furniture
removal!

First off, most moving companies, such as Mayflower or Bekins, have a notorious
reputation of destroying items during transit.

Secondly, the story reveals certain details about how the TV was damaged. Upon
examination by a certified Sony repair professional, the TV set yielded
substantial physical evidence of mishandling. A small crack on the casing of
the TV and a severely damaged mainboard both suggest that the set suffered a
substantial impact, likely due to mishandling. Those details that you did not
note were present in the Epinions review.

The Epinions article you've presented doesn't support your claim against Sony
TV sets. All the article does is suggest that a TV set can be severely damaged
by careless movers. Any other brand of TV would have yielded similar problems
had they been mishandled in the same fashion. If there was a drop substantial
enough to damage the mainboard and crack the casing, it's likely that the tube
will have been damaged as well. - Reinhart