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The white knob on the neck board is convergence like Xeno mentioned, even marked H Stat. The black knob pot on the pcb is in fact the horizontal adjust.
The flyback transformer has 2 adjustments, focus and screen. No color when I moved anything (obvious to you guys I think) but I found it interesting that when I moved "screen" far to one direction all the edges showed the red green blue edge. (I am old enough to remember b&w tvs but I can't remember how the pixels looked up very close.) Anyway just talking. This pvm is so basic that it may not even have a service menu if that's possible, I definitely haven't seen a remote available for it either.
Thanks again for the comments, hopefully someone will recognize this model.
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