I have this from Chad B. he wrote it in the forum a while back , the approach that he takes , it's kind of a work flow. Perhaps it might interest you
MJODOTCOM In this case however the method is to not increase anything for the RGB but to always cut.
Start with TV in movie mode; reset to get to baselines (contrast 95, gamma 0, enhancements off, etc). (Samsung Plasma and Samsung LCD's)
Leave contrast at 95 and gamma at 0. Adjust brightness with a low APL pluge pattern. Adjust backlight for LED and Cell Light for plasma for target luminance.
Adjust 2 pt white balance, using 100% for the high end adjustment and either 20 or 30% (your preference, could also be determined by your meter's low end sensitivity) at the low end. Only cut, do not boost 2 pt WB controls. In other words, all numbers should be at or below 25. You should have 100% pretty close to perfect. Re-check brightness with low APL pluge.
Take a full 10 or 11 step run. If gamma is close to target, then proceed. If not, then select a different gamma setting to find one that's closer, and re-check brightness. Then re-measure. Repeat as necessary. After correct gamma preset is found, re-check 2 pt white balance, then re-check brightness.
Then do the 10 pt adjustment, starting at 100% and working your way down. You should not have to make an adjustment at 100%.
In the 10 pt adjustment, use G to flatten gamma, and match R and B to G.
After that is complete, re-check brightness. If a large correction was necessary at 10%, you may need to re-tweak brightness.
Take another 10 or 11 step measurement. You will find areas that need further improvement, so you will have to repeat until you are as close as you want to be or until you reach the point of diminishing returns.