Need to change the backlights, dismantle the tv, open the back, look the serial number of the backlight strips and ordered it from AliExpress
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=== Update (03/17/24) ===
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***What causes TV backlight?***
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Backlight is the light that allows an LCD screen to create an image. In older TVs, this was achieved by ***a fluorescent light (CCFL) behind the screen***. In newer LED TVs, LEDs are used instead of CCFLs for backlighting.