When using a tandem Arduino Mega 2560 + TFT SSD1963 TouchScreen, I've got a problem.
Using a library UTFT + UTouch.
During program execution, sometimes the screen lights up white. In this case, the controller and the touchscreen is fully functional, if you click on the place where the buttons were located, execute the appropriate action.
In the future, only helps reset by turning off the power.
Arduino boards used two different manufacturers and two screens, so the excluded hardware defect.
Help advise what could be the reason?
Pictures of my problems: