Originally Posted by allWhiteMeat
I went into Best Buy, talked with the floor manager and had the TV replaced. Set it up last night, put it through its paces and here is my conclusion.
Old tv build date April 2012, new TV October 2012
rapid onset IR- old set would retain any still image onscreen for more than 5 seconds, i.e., HDMI labels, stationary objects ect ect. New tv shows no sign of.this issue. This panel is only about 5 hours old, and some people say the problem got worse before it got better. Will keep an eye out for it.
Vertical Bands, right side of screen- old tv had 2 distinct bands, visible in most solid color backgrounds (every commercial out there). New tv, none present
Dirty Screen Effect (DSE)- didnt realize the old tv had this issue until I saw the new one do the IR sweep. Cant describe the difference, but the new TV is clean, white, and consistent during the IR sweep. Old tv (by memory) looked dusty dirty during the sweep.
Electric Hum during bright scenes- no change. I tested for all external variables and interference. I the tv though. Not as bad as the whine old CRT's used to have, but I hear it still. Might consider some fabric on the wall behind the TV to cut down on the echo/projection of sound.
Green sparkles: old tv had green sparkles in any dark colors past brightness 58. The repairman and repair call center said this is not normal, however, the new tv is doing the exact same thing. My LG 55lm7600 is broken and they will be here monday to look at it. Im going to have this guy look at this issue again. I requested a new repairman as the last guy was more.concerned with watching CNN on election day that looking at my TV. Ill update you, but I assume this is probably a normal (ish) function of the tv. From a great enough distance you dont see it, but the effect is still felt. If my wife can feel it, its happening.
Line bleed- hard to describe effect, but I saw it constantly, was hard to accept that it was normal. Repairman said line bleed is something Id have to live with to a degree, but it was excessive i tbought. As it turns out, the new tv has like 10% of the line bleed the first one did. Its there if you really look hard to find it, ut I in no way see it in regular programming anymore. Im extremely pleased with the improvement and assume this is what was considered normal mild line bleed in the official reviews.
Test patterns: i never knew what test patterns the old tv failed or why, just that it did. The repair guy told me it failed and I believed him. I will update this monday as well if the repairman for my LG set has anything to add.
Pixel Orbiter Random Functionality: using the factory firmware on the first set, I found that the pixel orbiter was not functioning consistently in "size 2" mode (no trimming of borders). I did this by placing a small spot of silly putty on a fixed point in the image. It never moved on the first set unless I switched back and forth between size 1 & 2. After switching back and forth and observing I saw the image move relative to the silly putty. I still need to perform this check, but Im going to assume its working for now.
The new set looks brighter and more clean/crisp. This could be from the panel being so young again, or the old panel just stunk. Its not so bright clean or "poppy" as my LCD, but its alot better than the original. Without the rapid onset IR occurring Im hoping the set will not be susceptible to burn like the first. Havent played Borderlands 2 yet (source of original burn), nor am I going to baby this panel for a hundred hours. Im going to use it like my brother did on his 55ST30 and expect the same results. In addition, the guys at best buy pricematched the set and threw in an extra 20bucks for my troubles, so i used the 80dollars to buy halo4 and some candy for the kids.
Its fair to say the last tv had aome issues that were addressed in the later production runs. Not sure what firmware Im using, but with an Oct build Im assuming its the 1.2version
Good luck all, and thanks for reading