Screen display defects are frequently occurring in LCD televisions. Conditions with the possibility of being fixed (This does not guarantee improvement) Backlight is on, but the screen is basically dark (When the LCD screen doesn't display anything in a completely dark room, and only the backlight is on (slightly illuminated)) Sound: Audible Remote control: Operable When requesting repair from the manufacturer, they do not offer to replace this board, and the repair cost becomes high because the entire LCD screen is replaced. Please search online for more details. Compatible models 65M520X 55M520X 50M520X 50BM620X 50M520X 43M520X 43M520X Reference site http://honey82chu.hatenablog.com/entry/2016/07/06/085344 Notes We cannot guarantee any troubles such as replacement issues or damage due to model number errors, or troubles such as no symptom improvement after use, so please understand. There are various causes of failure. Please consider this as a chance to try at a low price.