Problems with colors when using an HDMI to S-Video converter

I have Lakka on a Tanix TX9 Pro (TV box) and I use an HDMI to S-video converter on a CRT TV, but there are color problems, the image is only purple, green and gray. When I use the converter on a PC to have an image on a CRT TV, the problem does not occur; not even if I use the TV box on digital TV, and the converter on other devices. Does anyone have any ideas to help me? Please. Greetings

sounds like an RGB / YUV mismatch. HDMI can carry both, and it sounds like it’s expecting RGB but getting fed YUV (Y is “luma”, which is the gray part; U and V are the color data and look purple-ish and green-ish)

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