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Old 11-21-2013, 04:19 PM
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Kamakiri Kamakiri is offline
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Join Date: Jun 2002
Location: Buffalo, New York
Posts: 5,109
My 23" Zenith is an F2737E, from 1961 (23ZP4 picture tube). It doesn't have a "peak picture" control that I can see, but it does have a "quad coil" adjustment. To this day I have no idea what that does.

I don't have the schematic for it, but at least now you've got a model number.
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