Re-calibrate pixels uniformly and remove any residual effects that could reduce you're TV's picture quality.
TV channels that have a static logo permanently on the screen have a real negative effect on Flat Screen TV’s. Pixels begin to memorize this image or parts of it, when you switch over you can still see the logo in the form of a shadow. After a few minuets it will disappear. If 99% of the shadow has gone you will not notice the 1% that remains. It is this continual build up of the 1%’s that is called residual effect. It’s build up over months and even years can in time lessen the picture quality of you panel.