My First Predicta

[bandersen]

You push the magnet forward or pull it back. It either gives that side of the screen a slight assist in deflecting electrons or holds it back. That has nothing to do with your issue though. I'm thinking it might be more of an issue in the video amp. Like you have ringing in the video signal or the if alignment is off. What effect does fine tuning have? How do other patterns or live video look?