I believe this set must have a bad panel.... just wanted to run it past some of the experts here. Due to the boards being readily available (and salable) on eBay, I tried changing them in the following order:
T-CON
Power board
Logic board
The symptoms persist. The picture becomes progressively worse as the set "warms up" See photos
T-CON
Power board
Logic board
The symptoms persist. The picture becomes progressively worse as the set "warms up" See photos