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About that vertical centering...many times I would see it way off, as well as height and linearity being misadjusted. I believe most of us understand the relationship between the vertical pots and how the top or bottom of the raster moves with it, how they interact with each other.
What I'm getting at is take the normal-service switch and put in the service position and establish your center line. Can be tricky if the convergence is off though. Now you can adjust the other pots for a good, (more) centered and linear picture.
B+, B+ Boost, and High Voltage can affect just about everything so good to check voltages...as you mentioned.
These Old Philco's are fun!!
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