[Jeffhs]

My Insignia flat panel also has the auto-dimming feature, referred to in the menu options as adaptive contrast. I turned the auto-dimming off and no longer use it.

My set is coming up on three years old, and I haven't had one bit of trouble with bad capacitors or anything else; the picture is wonderful, as is the sound. The only thing I can fault this set on is the placement of the speakers; they are located below the panel, but they face downward, so they are talking to the top of the TV stand most of the time. One of these days I may get a sound bar or some other kind of external sound system that is front-firing, so I don't have to turn the volume up past 50 percent to hear it. I've tried using my stereo system for the TV audio; it works, and well, but that arrangement doesn't allow muting.