Touchshield Slide - red in each color


I just bought the Touchshield Slide, I used it, and it worked well for a few days, but suddenly there was to much red in each color, and the Buttons, I uploaded were not be shown, like I programmed it, I tried to Transfer the images again, but it is still not working. Also in each color, except of the 3 colors red, green and blue. I looked if all electronic componets are on the board, but I couldn't find anything. What could be wrong with the device?

Greetings Philipp