Today's Mystery Guest (RCA CTC-4)

[dtvmcdonald]

When I look at you scope trace from the video amp cathode, it looks
awfully correct. RF-IF alignment may be causing problems at the color edges of
the bars, but across their center they should look quite good, both color and intensity.
Especially the magenta bar.

I would be scoping the video and color demodulator circuits very carefully.
Because the circuits are so very idiosyncratic, you many eventually need
to get scope traces from a similar generator on a working CTC-4. When my CT-100
had similar troubles, especially the magenta bar, scope traces in the color section
were clearly wrong. But ... the Ct-100 color section is a piece of caketo understand,
compared to yours.

In any event, scope everywhere after the video detector and post the traces,
so everybody can look at them and ponder them.