I recently had the pleasure of talking with Thomas Daede, the creator of an open-source CRT chassis. This project aims to replace the current aging circuitry that drives CRT TV's and arcade machines, with more modern components that allow for more control and flexibility. While the project isn't ready for public testing, Thomas has made some pretty incredible progress so far and this has potential to completely breath new life into older CRT's. If you're a CRT-expert and have experience in high-voltage electronics design, please check out the Github link and see if you can contribute:
Github: https://github.com/tdaede/td-crt
Follow Thomas: https://twitter.com/enginetankard
Demo of it in action: https://vimeo.com/591387422
This is also available as a video, links here: https://www.retrorgb.com/interview-with-open-source-crt-chassis-creator.html
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Thomas also mentioned some of the resources he used to get started and I wanted to share them here:
TV: https://www.repairfaq.org/sam/tvfaq.htm
Monitor: https://www.repairfaq.org/sam/monfaq.htm
Deflection: https://www.repairfaq.org/sam/deflfaq.htm
CRT Tube: https://www.repairfaq.org/sam/crtfaq.htm