Earlier this week, I noticed some green blobs in 'white' scenes in the lower right quadrant of my 4-year old 60A2000. Later, the blobs turned into a single horizontal and vertical line, then into a circle. First instance of this artifact on this HDTV. A lot of experimentation with a calibration disk over the next few nights revealed some interesting characteristics:
- The artifact is not apparent when TV is first turned on. It would appear after set was in use for a while.
- Green artifact readily noticeable in content with a lot of white in lower right quadrant.
- Experimentation with color fields showed artifact on Blue field, and to lesser extent on Cyan field, but not on Red, Green, Yellow, or Magenta fields.
- Artifact most noticeable in a blue color field, where defect appeared as an absence of blue.
-After many hours of watching various content, then switching to blue color field to see if defect was present, it became evident that the 'defect' was not random, but usually a pattern. In most cases, the pattern was obviously the channel bug that is usually displayed in lower right corner of most broadcasts. For example, after watching a hour of TNT, the blue color field would show the TNT logo "burned in" on the blue color field. It would slowly vanish over a period of time.
- The 'burn in' is quick. I could put a graphic overlay over the blue field for a few seconds and when graphic was removed, there would be an after image of the graphic burned in the blue. The longer the graphic was present before being removed, the longer it took the after image to vanish.
Conclusion: A problem has developed in the blue SXRD panel such that static images suppress pixels on the panel. In a white field, the suppressed blue results in a light green artifact.
Would having a OB swap performed, correct this problem?