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#16
08-07-2014, 02:22 AM
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Ok,
Here's what happens. With everything connected, pin 5 of the damper measures 230V, which is of course, B+. Pin 3 measures 300V. As I remove the damper from an operating set, the picture quickly shrinks to a vertical line before fading out completely. Being a series string set, everything dies. Removing the yoke increases B+ to 260V, which is still a bit shy of the supposed 275V. I have a Princess or a Debutante the that I could take yokes out of, to sub for the one in the Holiday, but I haven't looked at how similar or compatible they are yet. I know the plug certainly looks the same. The horz windings of the yoke measure ok, but I know that with AC, inductance also plays a part, just as it does with the flyback. As to the boost cap, that's been replaced, I assume it's ok. With the damper removed, B+ jumps to 280V, pin 3 changes from 300V to 3.5V. Cheers, Adam
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Four Predictas down, now to score a Continental. 
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