In an amazingly quick blink of an eye, I’ve managed to compromise a Nextion 3.5" somehow.
It still functions, but instead of drawing ~150mA, it draws 500mA, the backlight is dim, and the STM32 runs hot, real hot.
If this fault condition is confined to the STM32 alone, I can rat an STM32 off another display (obviously the same variant) that has different issues and put it onto the one I just toasted.
Has anyone been through this?
Is it just the STM32 that has partially failed or is something else involved?