Vertical Centering
My recent acquisition is a '64 Zenith console, model 7500-4. I don't have the sams yet but I had a question. I was trying to make a few minor picture adjustments and found what I believe is the height control just above the brightness and peak pix knobs behind a door on the front of the set. I went to adjust the vertical centering and on the back of the chassis where it is stamped vertical centering there is just a hole. Nothing else. Where is the vertical centering adjustment? Chassis # 25LC20QS
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