It appears on these panels that if you set the Picture/Contrast and Brightness controls to their mid-point then use sub-bright and sub-contrast in the service menu to setup the black and white levels, the panel’s gamma is somehow thrown for a loop (way too low). Leaving sub-bright and sub-contrast alone in the service menu and using the user menu adjustments seems to produce OK gamma.
This is preliminary… I will be confirming this in 10 days or so when I go back to have a second shot. I will post a follow-up/update after that return trip.
