I bought used LX-5090H few weeks ago. Currently it has little over 4000h. Then I used ControlCal to unlock ISF modes and did some quick calibration using i1display pro, PS3 and mascior calibration disc. What I don't understand is why black level in service mode is lower than in ISF modes (0.005cd/m2 vs. 0.012cd/m2)? This is measured displaying all black screen. Does service mode crushes blacks or changes the picture to dynamic mode? The picture definitely isn't the same in service menu. Why can't I see the 5% grey window in service menu? I would like to lower the mll by reducing VOL YKNOFSA D value but now I'm not sure what is going on with the picture in service mode. I haven't done the reset procedure.