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Hi Kevin,
Thanks for the diagram. It is a synchroguide circuit. Only the horizontal hold control isn't a portentiometer in your set: the control is the coil itself. If I recall correctly, your set may have a limter to prevent adjusting it too far. Try adjusting the horizontal hold so that the image moves to the right at the point just before it loses sync. That is the optimum point in a synchroguide circuit and that should provide a good reference to examine the left hand of the picture.
Is it possible to post the damper circuit?
Thanks,
terry
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