Curved Red Lines On Sony Rear Projection Tv What Causes Curved Red Lines On The Display Of Sony Rear Projection TV?

What causes curved red lines on the display of Sony rear projection TV? - curved red lines on sony rear projection tv

We have a rear projection Sony HD TV. He has worked for 5 years. Recently, we found that there are red lines horizontal curves recorded continuously on the screen. Whether you input (DVD player or cable box), these red lines are continuously displayed when the TV is on. Ideas about the causes and how to solve this problem? Is it something to do with the cleaning of some of its components?