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UPDATE, MAY 27, 2019, DAY 301
On the way to this update, the rebuilt VCT was arcing so Mike installed a second, which was tested and found to be in good order. Just a note about the previous update, I believe the RCA 21CT55 has 6 IF stages. This Westy has 4 IF stages. Correct me if I’m in error.
From Mike: “Greetings Marshall. Tonight I installed the replacement transformer that John Folsom sent me. I now have the expected approximate calculated 7 Kilovolts on the convergence pin for the CRT. Of course, that wire is still just hanging because we are jigged to a 21FBP22 instead of the 15GP22. But that is great news. There is a tracking problem with the gray scale and I need to look in to that. I know that my crt is not the best but it seems a bit more dramatic than I expect. So, that is the next issue to address. When that is corrected, I can finish my tuning of the chroma circuits for proper phase. My idea of installing a 3.58 MHZ crystal is not going to work in this chassis. The rest of the electronics continues to be very stable. Rock solid sync and monochrome picture. Also, soon it will be time to remove the 15GP22 from its storage and clean it up in preparation for a new aquadag.
Regards, Mike”
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