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Dac was my issue I just replaced the Y dac on my asteroids that had a similar issue but right in the center. That fixed it on mine. It seemed to be getting worse over time so I finally just took out the board and put in a new Y D/A converter chip and there's no more distortion in the middle...

Great idea. I'll probably try a variation of this (maybe make a "special" wiring harness to do it since I have all the connectors). All I see that could be an issue is a 0.1uF capacitor to ground on the emitters of the transistors that I might add on the HV board (not sure if it's needed for...

Nice call on the SW pincushion correction - So I added the metal things back from the TV yoke and they mostly corrected the StarWars pincushion. The distortion I'm talking about is a bit different from pincushion - the vectors are kind of folded over and the grid horizontal lines don't reach...

Tuning for rewound yokes Not sure if I'm "hijacking" this thread too much - I figure it's kind of nice to have a bunch of XY rewind related info in fewer threads to keep track but I'm happy to start a separate thread. Plus this relates to a couple of posts in this thread anyway. I did some...

Made a Star Wars harness to test the 6100 repro Here's the repro 6100 monitor with rewound yoke showing StarWars! I know its nothing new for some of you but I'm pretty happy with how it turned out. Now I just need to find or make a SW cabinet since I've got the monitor, boardset, and yoke all...

I think that since you are wiring them in parallel you do get opposite fields because of how you are connecting them together. If you connected them in series connecting the ends of one side together like this: input -- top half --- bottom half --- input Then they would be just like a...

Same issue but only in the center on mine. Same on multiple monitors so definitely a board issue. Just haven't had a chance to work on it yet but I'll update as well if I find anything. Might be the D/A converter since which bit is acting up would determine how many times the glitch is repeated..

Yoke winding Hi everyone - I've been fairly deep into a reproduction 6100 build (I have one done and a second almost done). I'm using tubes from TVs or raster monitors, and the sides from arcade monitor frames, but I've made everything else from "scratch" using Dez's boards and some metal...