This is most probably your backlight inverter. Easiest way to know for sure is to turn off the lights and make it rather dark in your room, next turn on tv, then place a flashlight at an angle close to the screen. If you see a slight movement in the screen from what ever is being played then it is simply your inverter. These are relatively inexpensive and found online, also you can find tutorials on Youtube that ill walk you thru replacement. My 50" RCA took me 7 minutes to replace. Good Luck
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This is most probably your backlight inverter. Easiest way to know for sure is to turn off the lights and make it rather dark in your room, next turn on tv, then place a flashlight at an angle close to the screen. If you see a slight movement in the screen from what ever is being played then it is simply your inverter. These are relatively inexpensive and found online, also you can find tutorials on Youtube that ill walk you thru replacement. My 50" RCA took me 7 minutes to replace. Good Luck