So I have this Jr, the version without the RF can, PAL. I followed these instructions and removed the 8 components (plus RCA jack) and installed the mod.
Sound works, picture works and is SHARP. But it is only black and white, no matter which cartridge I try! Toggling the BW switch doesn‘t help either.
What issue might I have? I have a scope and can probe around, but I am not sure what I should probe. I guess I start with Pin 9 of the TIA, which is Color?