CTC-4 Director 21

[Hagstar]

With my CTC4 I ended up getting all NOS tubes which I've never done for any radio or TV. BUT these early color sets run them too hard. I can't get stable color with any of my used tubes in the chromiance section even though they test fine on the Hickok.

[SwizzyMan]

Originally Posted by Hagstar

With my CTC4 I ended up getting all NOS tubes which I've never done for any radio or TV. BUT these early color sets run them too hard. I can't get stable color with any of my used tubes in the chromiance section even though they test fine on the Hickok.

Good idea John. I did suspect the 12BH7 r-y demod. Tested fine. I'll pick a whole new set except for h-out and he circuit tubes.

[SwizzyMan]

Could this be a weak red gun? Id think if the red was weak of course shades of certain colors that use red would be way off. I just need to know if I should start hunting for another tube.