sharp 21V-J70M yellow picture w/ sound then goes out in seconds

[egm]

to all,
 
Pls help me, when I turn on my sharp tv there is a yellow display with sound but it goes blue dark and cant see any more the image and also the sound gone. I have already replace TA8403 have also check Hor. driver and Hor. out but its ok. I will really appreciate your help thanks..

egm