Hisense 50" LED TV LED Strips Replacement TutorialCLICK HERE for replacement LED strips: https://www.shopjimmy.com/hisense-rsag7-820-6311-roh-hd500du-b01-led First the back cover was opened and a test on the backlight was performed by my friend. He found that the backlight was defective. To access the backlight, we need to remove the boards, the panel; i.e. strip the entire TV apart. Once the backlight is visible, we have to remove the locking clips of the reflector. In case the hotkeys are not working, try it as a combination with the Fn key ( Fn + F7, Fn + F3, and Fn + F4 ). But if you have a gaming model, use Fn with the up and down arrow keys. Check the keyboard light icon to identify yours. Some ASUS laptops even allow locking the function keys using the Fn + Esc hotkey. Purchase a backlight tester to test the LED backlights and check if they work or not. If they don’t work OK, then the problem is in the backlights and this would have to be further diagnosed as to the cause. Search on YouTube for how to use a TV LED backlight tester to test the LED strips. If they do work OK i.e. LEDs on full intensity when Vay Tiền Online Chuyển Khoản Ngay.

led tv backlight not working