Friends,
after reading all the posts i would like to share my experience with you.Samsung is one co in India which takes Service pretty seriously i would say the best in India.
I have a same tv in younger brothers house and have not found any buzz even though i looked for it late in night too,so guess maybe few sets may have this problem,I was reading on this thread about FW update which i feel should be left to Service professional from Samsung esp if you intend to do manual update.
i have total 3 Plasma tvs 2x42 1x50 and i have found this tv to be the Best of all.
I have done calibration of this tv as below and have found that with these settings its on a different level altogether,Hope you find these settings useful.
regards...
White Balance Settings Red-Offset 22 Red-Gain 33 Green-Offset 25 Green-Gain 25 Blue-Offset 12 Blue-Gain 33 Picture Settings Picture Mode Movie Black Tone: Off Color Temp Warm 2 Dynamic Contrast: Off Brightness 56 Gamma: 0 Contrast 90 Color Space: Auto Color 53 Flesh Tone: Off Tint G35/R65 Edge Enhancement: Off Sharpness 10 Digital NR: Auto Cell Light 8 HDMI Black Level: Low Film Mode: Auto