sony bravia kdl32s2530 picture problem

[techno]

Hi All
I have a sony bravia 5 years old with a picture problem.The picture has a green hue to it on black back grounds and peoples shiny hair show green tint.I cant get rid of the tint with the adjustments.When i got the tv there was no picture and I fitted a t-con board.does anyone know how to fix this or is it  the panel on its way out.
thanks in advance