VHF Tuner Alignment: where is the overall oscillator adjustment?

[LukeSimon]

Aligning the burst amp in the chroma AFC didn’t fix the hue, but the tint control seems to have the ability to shift the phase by about plus or minus 20 degrees now. The problem is that the hue is 90 degrees out of phase, so the range of the tint control is not sufficient to correct a 90 degree phase shift.

Correct Test Pattern Hues:


Notice the 90 degree phase shift:




Here is my current theory. The burst and chroma signal travel through separate paths. The red path is the burst. The blue path is the chroma signal. It passes through A14, A13, and A12. These 3 coils are what are tuned during chroma bandpass alignment. They are causing the 90 degree phase shift. So I will first try to adjust A14 to get the correct hue, and then redo alignment but only changing A13 and A12.