I have a Samsung model HCN653W and it has red and green duplicate images on the screen. For example- Text on the screen will be seen twice one in green and one is red. Images of people are similar however the green is always on top and the red image appears on the bottom almost as a ghost like image. Someone told me that it might be that the lenses are out of alignment. If this is the case, is it difficult and or expensive to repair?