Originally Posted by LabLuvr
I have a Pro-111FD and love it. However, I'm fairly new to HT and need some help. When I am viewing "some" Blue-Ray discs or even DVDs I frequently get bars at the top and bottom of my screen or on the sides as well.
My post about aspect ratios should clear up your questions. In short, the black bars appear when ever the source material wasn't created with a 16x9 aspect ratio.
Usually, I use the Zoom function on my Oppo BD-83 to fill the screen as it has been my understanding that it may be harmful to the screen to leave the bars "on".
As long as you watch a mix of full screen sources along with "black bars" you shouldn't have a burn-in or image retention problem. When the black bars are on your screen, that area of the screen is not aging as much as the rest of the screen. After the first few hundred hours the most rapid period of aging is over. All you need do then is mix your viewing material so that you are giving all parts of the screen a workout.
Spending hours at a time on a source with high contrast fixed images such as games, sports, the History Channel, or channels with tickers running at the bottom of the screen can be more dangerous than black bars. Even those sources can be watched if you keep alternating with source material that doesn't have fixed images. For instance, leaving CNN on all day to "keep up to date" would not be a good idea.
I watch football (fixed images) and all kinds of aspect ratios (movies), and have had no image retention problems with our 2007 Kuro. I was very careful for the first 500 hours, and have let nature take it's source since then.