Just a wild thought - did this occur suddenly, or was it like this from the first? If from the first, is it possible some coil connection is reversed and producing the wrong polarity field?
Edit: I was thinking alignment coils, but in review I see the adjustments go both negative and positive anyway. So, now thinking the multiplier voltages, especially the multiplier focus, which is apparently at one end of the range (?) Warning: I have never operated an image orthicon, so take these free comments for what they're worth!
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Old TV literature, New York World's Fair, and other miscellany
Last edited by old_tv_nut; 07-20-2016 at 02:47 PM.
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