Unplug the TV and leave it unplugged for 30 seconds. Next, plug the TV back in, using an outlet you know works (you can test the outlet with another device, like a lamp). Please do not use a surge protector, as they may eventually wear out and stop providing the necessary voltage for your TV.
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
This new backlight technology can help boost brightness and improve contrast in LCD TVs from Hisense, LG, Samsung, Sharp, Sony, and TCL By James K. Willcox Updated April 28, 2023
Rep: 1. Posted: Oct 9, 2022. Options. Simply unplug the tv, and unplug the cable box. Wait 30 seconds and plug cable box back in. Wait a few minutes then plug tv back in. Power on tv and after cable box completely resets, the dark portion at the top of the screen is gone.
Backlight problem. If you have an LCD TV, a failing backlight could cause your dark screen. A backlight is used in LCD TVs to illuminate the images on the screen. Failed power supply board. The most common problem of a black screen is a power supply board failure. A TV may feature multiple power supply boards, a T-con board and other internal
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If you suspect there is an issue with your Samsung TV display, you can perform a TV display test to diagnose the issue. Follow the steps below to test your TV screen or if you need to troubleshoot your screen, follow our step by step guide to perform a TV display settings reset. Read our FAQ on how to use Device Care for more information on TV
The power board model is BN44-00774A. Backlight should light up with the main board cable disconnected from the power supply. If they don't, suspect LED strips though shorted LEDs have been known to cause failure in Samsung power supplies as well. Tricky to confirm without a LED tester. Tried, no backlight.
Avoids LED backlight bleed, because it's not an LED TV! OLED TVs like this one do not experience backlight bleed. The LG C2 evo OLED TV has self-lit OLED pixels with superior image quality, extreme contrast, perfect blacks, and over a billion colors. This is an exceptional TV for any use, whether for movies, games, sports, or as a PC monitor.
