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Originally Posted by TinCanAlley
I did notice something when doing the G2s. I turned them all down, but the grayscale pattern I had up was tinted green. Is that supposed to happen?
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Yes, this is completely normal and every TV will show one color stronger than the other two with the controls turned all the way down.
This is just a reflection of the strength of the guns and is exactly why there are adjustments there by design. The whole system changes as it gets used and over time, so it's never going to be perfect out of the gate.
You want to leave the green G2 down almost to the very minimum and just correct with the red and blue to make the darkest grey look a pure grey.
In theory, you can leave the green down all the way, but I usually will turn up the brightest color a tiny bit because I don't like to operate a potentiometer at its extreme. Especially those older pots can have damage or weak spots on the ends sometimes. It can also be beneficial to have a tiny buffer in case you want to correct for it while balancing.
The dark room mostly helps you to see the color at low light better, where the G2 controls are going to be doing their work.
I used to do it by eye, but I can't really anymore; my night vision is pretty bad at this point. I purchased a used color meter on ebay and that works quite well.