RCA Projection TV in Central Europe

[Phil]

Those are anti-corona knobs or rings. The voltage at those points is very high and so the pointy end on the doorknob capacitors they used would tend to develop corona at those points. I wish you good success. On the chassis of that type I have worked on 75% had back flybacks. They tend to run hot. It appears to me they used the same flyback they used in the 630 with the addition of extra filament windings. I would like to replace the rectifier tubes with solid state replacements to take some of the load off the transformer, but have never found a matched set of three.