Sony KP-57WS500 57" Rear Projection Television "adjust horizontal hold flat screen" Questions

horizontal lines across the whole screen can any one tell me what causes this and how to fix it please Hey, I had the same problem with blue and red lines and this post helped me bigtime ! Just adjust

...hold. It is covered by a plastic cover that has two tabs holding it in. Carefully pry them out with your flat head screwdriver. Do not apply too much pressure or you can break the tabs off. Once the ...