Not an answer - sorry, but slightly more information. We have the same problem with the same TV as of Monday 30/7/07!
Turn TV on, makes funny high pitched noise, screen may come on for a few seconds, then goes off and shuts down. Standby light blinks 3 times, then repeats. Pressing the remote doesn't tv back on, just flashes the little red light some more.
Can anyone help!
Simon, August 2007