回答“TCL 55C803 Roku TV. Blank screen, but blacklight is on.”I am surprised no one has given you an answer. The problem you describe is indicative of a bad led. There are several videos on YouTube to help you, Here is one for a different model: https://www.youtube.com/watch?v=KaKi5aC9... Hope this helps.
回答“TCL No Backlight, Black Screen, Flashlight Test Good, Menu Sounds Good”Hi Everyone, I am in the same boat. I have the 7103X, model 55P607. Got a black screen, there is audio and I can (blindly) launch Netflix from the remote button. The screen is almost black, I say almost because there is a very dim black light. If I press on the panel with my finger, I can see a burst of light, possibly from the LED’s. I was quoted $180 to replace the LED’s by a repair shop with a 90 day warranty. Costco is selling a similar model, made by Hisense (China) for$269 that comes with a 2 year warranty. There is an option to extend the warranty for another 3 years (5 years total) for $34.99. I also came across a video on YouTube on how to replace the LED’s. I feel confident that I could do it but seems sloppy having to cut through the reflector sheet to remove the old LED’s. Here is the video: https://www.youtube.com/watch?v=KaKi5aC9... Still, I’m not sure it’s the LED’s, any suggestions greatly appreciated.