@hiranobu said in (Core2 AWS) LCD does not light up: Hello, I am a Beginner. The LCD on my Core2AWS has stopped lighting up. The power seems to be on, writing is normal, and when I restore the firmware to its initial state with M5Burner, the LCD lights up again, so it does not seem to be a hardware failure. After writing the sketch using ArduinoIDE, the LCD will not light up. I would appreciate any good advice you can give me. I posted this using an automatic translation service. Sorry if it was funny English. does it work if you use UIflow?