TV approx 18 months now - so out of warranty, its a Samsung LED UE40D5520. When it is switched on, there is a translucent black bar across the top of the screen, it covers about a third of the height and appears to become less opaque towards the right of the screen. It lasts around 7 to 8 minutes after the TV is turned on, (oddly longer if an Pulling your Samsung TV apart might cause your warranty to be voided. However, if you’re feeling brave and decide to go for it, you can get replacement LED strips online. Just be sure to nab the right ones for your particular Samsung TV model. For a step-by-step guide on how to replace your Samsung TV backlight, check out this handy video: Fix #4: Faulty LED Backlight on your Samsung TV. If other functions on your Samsung TV are working (audio, indicator light, etc.) except for its display, there’s a chance that it has an issue with its LED backlight system. To further confirm this, you can try doing the flashlight test. For reference, here’s how to turn off Night Mode if your TV is in Art Mode: Go to the Art Mode Home Screen. Navigate to Art Mode Options. Choose Night Mode. Press Enter. Set the Sleep After Time. (It can be set for 5 minutes up to 4 hours.) WATCH & LEARN: How to Fix Samsung TV Dark Screen. I have a Samsung 65" LED Smart TV, model number UN65AU8000F. The TV when plugged in, will have the standby red light on solid. When I try to turn the power on, the red light will flash once, then stay solid again. The TV will do nothing. I already did all necessary reboots or checks. Plz let me know what would that be (PS, backlight or mainboard). Vay Tiền Nhanh Ggads.

samsung led tv backlight problems