Duh. Just found the schematic. Main B+ goes to pin 2 (damper) of the 33GY7. You could jumper an electrolytic from there to ground and see if it affects the distorted raster any. 47 mf or thereabouts.
https://antiqueradio.org/art/BK1077BSchematic2.jpg
https://antiqueradio.org/art/BK1077BSchematic1.jpg
Last edited by old_coot88; 09-19-2023 at 07:36 PM.
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