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Any issues that may, or may not be with the focus coil area are not related to the tuning / IF or AGC issue, if it was, you would have seen a substantial change in video on screen when AGC test point A was given a bias sweep from 0 to 9v.
This means that no matter how AGC tries to set gain, no matter what the voltages are on V1 & V2, or the tuner, no video is going to get from the tuner to the detector diode w/o getting corrupted.
The alignment is wrong.
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