[wiseguy]

eric,make sure you do have a color signal going in,i would start off
with rocking the fine tuning control from one extreme to the other and see if you get color bars floating around,one other thing is those boards and intermitt connections,with tuning at peak sharpness adjusted then start pushing around on the boards and tubes to see if any changes happen..just dont burn your hands and use a large mirror for starts,this is about the only thing before taking the chassis out and troubleshooting..i did this on my ctc-7 and found all kinds of intermitt problems with bad solder joints,my set still looses filaments on the vert output tube,and its not the tube,make sure all the filaments are lit,and tubes are good..good luck and drink a lot of wine before you do this!
terry