Its not just a lack of green. Its also a lack of magenta/violet.
This simply means that the I/Q or rather R-Y/Q balance is off seriously.
Look at the SPECIFIED type color bars with your scope and adjust per instructions. Alternatively, use R-G-B-Yellow-Cyan-Magenta bars and
adjust so bars containing a given primary all have the same height at
the CRT grids ... see CT-100 scope traces. Pay particular attention
to the R-Y gain, its non-intuitive.
If this fails, you have matrix resistor issues.
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