It is interesting that some TV makes have a return to banding issues, which really are a manufacturing defect during bonding of the layers that make up an LCD panel. Maybe that's what comes with buying a low end basic feature LED TV.
Not to mention the LEDs can degrade in as few as 10 months use as Chad-B found in a recent thread. Apparently the yellow producing element in the LEDs degrades and produces a color shift. It can sometimes be compensated for in calibration, but over time it is doubtful since it IS the actual light source for the LCD panel.
I have a 6 year old Mitsubishi LT-46231 with the S-PVA
and have no banding whatsoever. It is the most uniform LCD panel I've seen compared to 8+ LCD/LED TVs I've purchased for friends and family over the past 2 years or so. It tops the S-IPS panel on my 42LD550 for lighting uniformity and black level also.
Back in '05 to 'early '08 there was no end to banding, columns, and clouding on all the major brands of LCD TVs. I had to return a Toshiba 47" in 2007 because it had three wide bands that were very visible especially on solid color back grounds in scenes.Edited by Phase700B - 2/11/13 at 9:58am