tv philips CR147s dark pic, b/w image only?

This philips tv will get a picture b/w only but the b/w picture is a bit dark also. Wont get any picture, the sand castle input in the video ammplifier ic is a bit bigger than it should be. It seem that the colour killer is shutting down the colour. Because if i put the colour killer to service mode i get an over saturated picture in the screen.
Can anybody help me.