Sansui — unable to see picture

i had purchased a sansui furatto 21'' eye-p flat tv on 22/08/2007, last night when i on the tv there was some blinking in it and then it just off with a very powerful sound, when i started the tv again it happened, then i just put off its back and start the tv then i saw the e.s.t. was leaking. now the tv is starting but i m not able to see anything in it, there is only a black window appearing, all functions are working but due to this black background i m unable to see any picture.pls do reply me i[censored] able to help me.