problem with channel emblems or scoreboards in sports always top left & right of screen scaring the screen still visible for some time after watching ,when watching something else .i have contacted pioneer 3 times who keep giving me remedies but no prevention for example if i watch a world cup rugby match now & then change channel i will still be able to faintly see the score board in the top left hand of the picture for some hours.does anyone else have this experience and what can be done to prevent it happening?