Well, it took a lot of online research and a little trial and error, but I did get a simple A/V mod to work with the Coleco Gemini. I've published my findings here:
http://kiblitzing.blogspot.com/2013/08/coleco-gemini-second-encounter.html
My only beef is that the contrast is poor, making games set against a black screen tough to play. I think using different resistors might help sharpen things up a bit.
http://kiblitzing.blogspot.com/2013/08/coleco-gemini-second-encounter.html
My only beef is that the contrast is poor, making games set against a black screen tough to play. I think using different resistors might help sharpen things up a bit.