New Project RCA 16t152 Trying to learn to troubleshoot better

[Kevin Kuehn]

This TV is one of RCA's early and unusual Direct Drive horizontal output designs. Basically an auto transformer directly driving the horizontal yoke winding. They work quite well when restored. And more energy efficient than the traditional flyback of the time. But the air core design only existed for a year. I believe in the second year models they added a small ferrite core, but the horz yoke winding remained in series with the high voltage winding.

[edit] Looking at the schematic this does appear to be the second version with the small metal core. But take a look at the unusual horizontal output configuration.

Here's the early and later variety. The one on the right is an air core, the left has some very small core, but I'm not exactly sure what it's made of. I'd be curious to hear what Penthode knows about these RCA Direct Drive models.