I just got a new shipment of Displays and they have a QR code on the SD card slot that suggests that they are second source flash ICs.
When loading my code, that has been running on over 100 devices successfully, with the latest Nextion editor on these new Displays they only flash White on startup over and over.
Did anyone else have the same problem and has a solution for it?
The Display does not communicate over Serial anymore and can not be updated via SD card.
My first guess was the power supply but supplied with my Laboratory Power supply at 5.5V that is also out of the Question