Thanks for the advice. Turning off the color killer has brought in color, but it is lots of purple and green colors.
When the color saturation knob on the front of the TV is turned 50% away from fully counter clockwise, I get lots of purple colors.
If I turn the “color” saturation knob on the front of the TV fully counterclockwise, as expected, the picture becomes black and white (aside from dynamic convergence issues).
If I turn the “color” saturation knob on the front of the TV to about 25% away from fully counterclockwise, I get green colors and a little purple.
One successful thing I accomplished is I got focus working! The slug in the ajustable focus buck boost transformer was not unscrewing as far as it should. I didn’t realize this a few days ago, but after playing with it for an embarrassingly long time, I was able to get it to screw in all the way and unscrew almost all the way. Maybe it was jammed with dust or gunk and constantly screwing it back snd forth unjammed it. Regardless, the cathode rays are focused sharp enough to show gaps between the scanlines when displaying 240p pictures.
Tomorrow I will see if I can get dynamic convergence calibrated, and if I get that working, then I will take an oscilloscope to the color circuit.
12-31-2022, 08:53 PM
Hybrid Mode
