Driving a round tube with a rectangular chassis?

[RetroHacker]

Well, I finally managed to find a round picture tube. I believe it's an FJ - it has a bonded safety glass. It still even has the yoke and the base connector attached - it looks like someone chopped up a console and just hacked all the wiring. Unfortunately, I did not find a chassis with the tube. I actually do have a cabinet though - a while back I found a GE roundie cabinet, but no innerworkings at all. So, I have a cabinet and a tube, now all I need is something to drive the tube. Has anyone had any luck driving a roundie tube with a rectangular chassis? Seems like I remember someone saying something like that a while back. I don't have a suitable chassis at the moment, but I might be able to find something, especially if it would be possible for me to use a solid state chassis. Too bad I can't use one from a modern inline gun set - those are much easier to find!

-Ian

[andy]

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[Chad Hauris]

Closest I've come is using a flyback from a ctc-17 Hoffman clone (rectangular) in a ctc-15 Silvertone clone (round.) It did work but width was a little low. I have used salvaged yokes from junk tube type color sets on CTC-53's with burned yoke wiring and they worked fine.

I would just have at it, I don't think you'll damage anything as long as you get the yoke wired up with the horiz coils to horiz and vert to vert...however you will need to use a chassis that has tubes at least on the horiz and vertical outputs as the impedance of the yokes used on solid state sets even if they are delta gun is different than that for tube sets.
You can wire up the convergence coils from from the round tube to the corresponding wires from the rectangular set's convergence board...the circuit boards appear pretty similar between rect. and round.