Thank you very much. The more I look at it, the more I think the set has been used a lot. But it is hard to tell for me what is "tar" and what is actually due to use. The darkened CRT base concerns me a bit, but perhaps it is normal. It's shown in the last attached picture.
The first pic shows what the Capri 606 looked like when it was taken out of storage.
Second pic shows what a bit of cleaning could do.
Third picture shows the flyback - hard to get a good picture, but it seems fine. As it is "16 kV only" I was hoping it would last longer than one designed for larger tubes/anode voltages.
Fourth picture shows the PCBs/chassis - I cleaned a few of the tubes carefully, mainly to get an impression of how much is nicotine and what is dust.
The 606 range was the first year the "line automatic" feature was introduced - making horizontal hold adjustment not required anymore.