Makertech team and community = dead?

nobody with any ideas? :-(

I unplugged the cables except the LCD ones. LCD still off. => control board deffect? => Mail to support for replacement?

Hey, so I used the troubleshooting manual you send me via mail (Link: https://www.makertech3d.com/apps/help-center#hc-tmc-connection-error) 1. I followed the steps 2. newest TMC 2208Stepper Driver installed (Version 2.5.1) 3. I also tried the "Standalone driver option" in config.h and i added the jumpers and removed UART for y and E1 AND I get the same Errors but Y and E1 is gone Connecting... start Printer is now online. echo:Marlin 2.0.5.3 echo: Last Updated: 2020-03-31 | Author: (none, default config) echo:Compiled: May 20 2021 echo: Free Memory: 3317 PlannerBufferBytes: 1232 echo:V76 stored settings retrieved (704 bytes; crc 61846) Testing X connection... Error: All LOW Testing Z connection... Error: All LOW Testing E connection... Error: All LOW => So what to do now? in Addition : 1. When I switch the printer on with main power the display is offline/black. Onlywhen I insert USB plug into pc the display online 2. I always power the 3D printer via main power 3. Red LED is enlighted on board