[Kirk]

I had this exact problem when I recapped a CTC 7A.

The burst ckt was so far off freq after I replaced the 2 coupling caps to the Phase detector (6AL5) that there was no chroma info at all.

Do you have Meaghers' RCA Pict-O-Guide? As a former RCA Service Tech I ALWAYS refer to this publication when I have chroma/sync problems. It has some great techniques for nailing down these nasties WITHOUT expensive test equipment. It was meant for feild techs to make repairs in the home.

The best one is the 1964 version (White cover) or the 1957 version (Black cover). I have both if you would like pages copied.

I used his method for finding the problem, and it was an adjustment to the burst transformer. DO NOT START ADJUSTING COILS! Follow the book and you will find the problem.

Best of luck,
Kirk