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Thanks for the interest and the Sams. Came to the same conclusion of a LF tube. Kinda fun to see a miniature delta tube. I did jumper the bulb to my Beltron and it showed great. Did a cleaning for fun. No real change to the focus. Still a bit soft. And the little AC hum jitter is back. That does not look like major filter problems. Maybe a minor sweep timing error on retrace. Later.
The Sams was interesting as my set has no HV adjust. The color killer is where the HV shows in the Sams. Design change or just nothing on the 13" version and not shown is the Sams? And I found duplicate Rxxx numbers. Oh well, it is what it is for going on 50 years old. Just like me. Wait, I am older. Thanks to all.
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“Once you eliminate the impossible...whatever remains, no matter how improbable, must be the truth." Sherlock Holmes.
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