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Dumont RA-103D "Rumson" restoration
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09-02-2023, 03:07 PM
bandersen
RCA 741PCS
Join Date: Mar 2009
Location: Chicago, IL
Posts: 8,808
Some good news - the tuner ceramic shaft appears to be intact.
The original 12QP4 CRT was so dirty I thought it had a dag coating at first!
I tested very weak but I was able to rejuv enough to get into the green. Life test and cutoff are pretty bad though. We've already discussed replacing it with a strong 12LP4. It's slight longer and has a different HV cap, but I think it will work.
Here's a test fitting.
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