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GabrielNeves

UM2 Mainboard problem: may be the Atmega2560

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My mainboard was working well when I decided to do some changes in the hardware. When I turned on again it did not work. The mainboard turns on but the display don't  show nothing and the LEDs from the Ulticontroller are always off. The mainboard can't be find by Arduino IDE and Cura Software to upload Marlin. Here are some things that I've tried:

 

  • I checked the voltages across the boards and they are all OK (24V, 5V, 3V3).
  • upload the bootloader and firmware in Atmega16u2 like this tutorial.
  • upload the bootloader and then the Marlin on Atmega2560 using avrdude on terminal.

 

After the above trying the UM2 remains the same.

Any other ideas to try before I start to replace the components?

Thanks for your help.

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