GE, blue screen, no sound, help please

Hello , I have a GE, model 24GP653.Manf date Sept.2002. When you turn it on the screen is blue with a blur of red an green in it , No sound. I noticed on the large circuit board there is a resister # R471 , Cap #C471, an a diode # VD401A, the board is burnt at these 3 componets an the outer body of the diode appers cracked, Does any one know if I replaced these 3 items if that might take care of my problem ??? , or did something cause there items to fail ??? ,, Thanks in Advance