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These parts may not be as rare as you think, RCA supplied many of those parts to Westinghouse home products division in Sunbury, Pa. where that set and other Westys were built until the 1955 model year.
Several 1948-9 RCA's I have are missing the cages, and tubes get plucked out for other projects as interest fades. My younger self may have been ignorant of the many other causes of no HV, leaving covers off for extend periods, then losing them. Normal looking but bad parts like resistors and caps, all can cause the same symptoms. Yours might just need caps, its a close cousin to an RCA, with a 14" tube"
Measure DC resistance between 1B3 and 6BG6 plate caps, between 200-600 ohms.
and if you have access to a flyback tester, you can further determine if there are shorted turns. Resistance alone cannot detect shorted turns, which kill any oscillation.
If you have an audio generator check the ring pattern between 15-16 khz, using an oscilloscope. I have confirmed a few shorted turns in an otherwise undamaged/un-arc tracked fly in two CTC12 chassis'n comparison to an NOS Thordarson flyback, it is a dramatic ring decay pattern if good, next to nothing when bad.
Many thanks to guys like you for saving a Westy from FB land, where it may have been repurposed YIKES!
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"When resistors increase in value, they're worthless"
-Dave G
Last edited by DavGoodlin; 11-05-2020 at 09:38 AM.
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