I was originally going to replace the green screen LCD on my PPC512 with a modern LCD colour screen. But there was nothing physically wrong with the built in monitor apart from the horrible motion blur. It seemed a shame to butcher a fully working device. So instead I opened up my CAD program and designed and built a mini “CRT” monitor for it. It holds an 8inch LCD panel and a RGBtoHDMI board for doing the CGA conversion. I will do a write up soon with instructions on how to build your own, including the 3D stl files to print your own.