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try a new video out tube, weaker they get the darker the pic becomes. Or just check the CRT pin voltages, esp the cathode and G1
Yes, the video output gain at max contrast is limited by the video output tube gain, so you will even see differences between "good" video output tubes.
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Old TV literature, New York World's Fair, and other miscellany
10-26-2018, 01:32 PM
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