Why don't you take it to a TV repair shop. I can't help you with how to repair your TV of which I have the same model. But the probable cause is that you either left it on standby, or did not disconnect the TV from the wall outlet. ALL CRT TV's should be disconnected from the mains supply when finnished viewing.
Mine is 9 years old the on/of button stopped working years ago. SO I stuck I bit of plastic in it, in the ON position. Put it on standby when I've finished viewing, and remove the plug from the wall. No problems. Great TV.
Leon
January 2010