Recent content by jonschultz

Sounds almost like it's in high-res mod mode, but I assume that's not really the case. :) Have you looked at pot PP1? I don't think you can actually adjust the nominal B+ all the way up to 80V with PP1 alone, but it might be worth a look.

https://github.com/jonschultz

I've often wondered if it would be a worthwhile project to try to adapt a more commonly available flyback to work with the Color Classic. I think it's definitely possible, but would likely require additional voltage regulators for the various odd semi-high voltages required by the analog board...

I had pretty good success with an LC575 flyback in a Color Classic, though I found that the 86V B+ version of the VGA mod was necessary to get an adequate horizontal raster. I think I also probably had to adjust the G2 voltage and the RGB background pots relative to their optimal positions using...

The board looks great, awesome work!

Thanks for the shoutout! As far as a I could tell from reverse engineering the XC1186B, that 5V is generated on-chip and is also on pin 7, and so I have a 5V regulation circuit integrated into my design. Connections to pins 41 and 42 don’t seem to be strictly necessary to power the system, but...

Hi everyone, I'm a very new member and just discovered this thread while searching for stuff related to the Color Classic's analog board. The reverse engineering project for the XC1186B mentioned above is actually mine. I'd be happy to provide any information about it that you'd like. I just...