hi there i have a toshiba regza 47inch which is 3 years old and i have noticed like ghostly shawdows and patches appearing on the screen on the left and right side, and screen burn is happning

shadows at the bottom of the screen sound like moisture that was "wicked up" between the screen layers and dryed out leaving a stain. DO NOT get these screens wet, use nothing but a damp soft cloth; just a few drops of water running down the screen can cause a fairly large stain. Some people have suggested that they may be professionally cleaned, but the risk of damage is too great on the user level.

Try using an input other than the tuner. I.e a DVD player or game system on the front inputs. If the picture looks OK on the other input, your tuner is damaged and will need replaced, if it looks bad also, try unplugging the TV for 5 minutes and then go through the setup process in the menus. If this fails seek a repair shop.

Hope you have fixed this problem by now, if that tv is unserviced, I mean if nobody has ever opened it, it could be a problem with the positioning of your tv, just tilt the tv in different positions and find out the position in which it will show the right fit. If it is serviced, especially yoke is changed, this is rare, it could be because the position of yoke is not aligned properly.