CTC-4 Director 21

[SwizzyMan]

Originally Posted by old_tv_nut

Are you getting tired? You seem to be missing a 9 this time. I think this time the numbers you meant to type were something like:
crystal across cap: 3.57960
target: 3.579545
without a cap: 3.57966

If that's right, the cap is pulling it 60 Hz, which is a nice amount of pull, so it seems something else is wrong. Which capacitors in the reactance tube section and the 3.58 MHz oscillator have you NOT replaced? Do you know for sure the reactance tube is good? Is the plate voltage 5 volts lower than the B+ supply as the schematic says? Time to look for anything that is not right.

Yeah I was up a bit later than usual last night.. Sorry about that. Your numbers are right just know that the lowest frequency is a bit rounded. To be exact I get about 3.579620 which is a bit higher than 3.579600 but it shouldnt really make much difference. The 6AN8 reactance tube is confirmed good. I'll check the voltage on the plate of the pentode of the 6AN8 next.

[SwizzyMan]

There must have been some intermittent connection in the socket of the reactance tube because now the color is solidly locked!! Frequency is on the dot! But I do have the wrong colors for sure and the hue/tint control changes the colors but doesnt give me all the right colors. I do know that I can do a touch up by adjusting the coil that is controlled in a way by the hue control (the control seems to act like a variable inductor?). But i think I should do a color temperature setup first. Your thoughts?