Screen surface is brighter at the edges
I own a 42PFL7656/k02 since September 2011.
Recently I have noticed, that the edges of the TV screen are brighter than the rest of the screen.
For now i don't have any picture of it, but if i switch to a input which is not connected (e.g. HDMI2), the background is "black", but the edges (upper right and both lower edges) are very bright (nearly white).
This is also noticeable while watching TV independently from the video source (HDMI1, DVB-S, Scart)
Did someone experienced same issues?
What could be the problem?
Should i return my TV or try to get a exchange TV?