Thoughts on chroma crystal ocsillator troubles

[Fant]

When you do not have any color in the picture, turn the color killer control so that color killer is off. Color may come back because killer was set for a strong TV signal. With killer off you may see floating colors. This means the color oscillator is off frequency. Short the test point (grid of reactance tube) to ground and adjust frequency coil until colors stay still. If a color picture only has greenish hue, the 3.58 oscillator is dead. Try a new crystal or tube.