Hello! I´ve got another problem. I got to the display-test. When tuning the BigBox on the LCD light up in blue back color but I have no display of any data. There should be something about a minimum temperature, because the heat bed isn´t connected and so on. I´ve read many topics here, all of them are about that there is no backlight - just swap the data cables. Sadly no one says something, that he has no data displayed. Someone wrote about 3 beeps, but I have no beeps. For sure I turned the sockets bei 180° on the display panel and tried to connect the heat panel. Nothing changed. Do you have any suggestions?