Originally Posted by jerrolds
What do you mean "Negative Changes" when it comes to PQ? Is it easy to tell without meters?
Sorry: forgot that not everyone was paying attention to the 2011 panels: EVERY 2011 panel we had in house - or in our two son's houses - had Green Blob issues to one extent or another.
We had 5 2011's at our house (although one arrived with a cracked screen
); eldest son 2; youngest son 1 - in addition, we checked out Over 20 panels in stores (most with help from store personnel) and found a Green Problem on each of them (mind you, we WERE being fussy, AND had a SD Card with slides that we knew emphasized the problem: many of those sets would have passed a casual viewing).
EVERY one of the sets we (or sons) had saw an Improvement in the Green Blob issue as the panels aged - and the 4 that were kept for At Least 500 hours ended up with negligible Unwanted Green (we could still "demonstrate" unwanted Green, but it was not an issue in normal viewing).
Alas, both of the 60ST30s that we kept for Beyond 500 Hours developed a significant Pink Tint problem. This was also reported by a number of other 2011 owners, but did not seem to be nearly as frequent of a problem as the Green Blobs were.
Our 60ST50 was a replacement - from Panasonic - for the last 60ST30 we had: the Pink Tint reached a point where there was no denying its existence. (Am leaving out quite a bit of info here - if really interested you should probably be able to find earlier discussions, from self & a number of other 2011 owners).
Understandably, we Aggressively Aged the ST50 when it arrived - particularly since IT had a "Yellowish Blob" in the center of the screen, along with the frequently reported Vertical Line Glitch.
Am glad to report the the screen on our ST50 is now wonderfully uniform, with NO trace of the Yellowish Blob, and only the barest HINT of a vertical "Shadow" - just inside the R bezel - that even I RARELY see, and even then am not convinced that it is "real." (Using the HD709 disk, this is easily the best panel we've had - and I cannot REPEATEDLY spot the Vertical Line on any of the slides: wife thinks it is just an Afterimage from spending SO MUCH TIME Closely Evaluating panel after panel after panel - and she must might be right!)
FWIW: Eldest son returned one 2011 panel (50") for Green Blobs + Growing Pink Tint, but kept the second (both dirt-cheap 50S30s), as both problems improved significantly during his return period. (90-days from Costco.... Although that panel has now developed a Growing Buzz, and apparently has some sort of Fluctuating Black Level glitch.)
Youngest son bought a 55GT30, and the Green Blob on his set was Barely Visible when new, and soon dissipated. Have not noticed Pink Tint on his set at all.
YMMV, but we are very happy with our 60ST50 - which seems to have done nothing but Improve as it has aged. At least do date....