While the right half of the normal color or color image appeared on several black horizontal line interference, sometimes only the middle color or a lighter color, and black and white images to normal

Which, C301 capacity variable small, caused field not synchronization or field synchronization keep range variable small; C504 automatically chroma control circuit ACC of filtering capacitor open, screen left half Department no color, and right half Department color normal; C514 elimination color recognition filtering capacitor open, color image Shang appeared more article black bar interference, sometimes only Central has color or color more light, and black and white image normal.