I have been using a Nitehawk 36 Rev C in my Voron 2.4 for about six months. During my last print, the printer suddenly stopped. I lost connection to the Nitehawk. Shortly after, white smoke started coming from the toolhead.
The smoke was caused by the hot end apparently running at maximum power and melting the plastic components next to it. Since then starting the printer results in the hotend immediately beginnig to heat up. In Klipper, I received the message "Printer is not ready," followed by "mcu 'nhk': Unable to connect." after a while. One red and one green LED are constantly lit. I couldn't find any documentation explaining the meaning of the LEDs.
I checked all the cables and the thermistor and couldn't find any issues. When I had issues with the Thermistor or connectivity in the past the hotend was usually turned off and not heated to the maximum. Therefore I assume it is an issue with the board although i cannot see any visible damage like a short.
Here is the end of my klippy.log
Could this be any other issue than a board failure?
The smoke was caused by the hot end apparently running at maximum power and melting the plastic components next to it. Since then starting the printer results in the hotend immediately beginnig to heat up. In Klipper, I received the message "Printer is not ready," followed by "mcu 'nhk': Unable to connect." after a while. One red and one green LED are constantly lit. I couldn't find any documentation explaining the meaning of the LEDs.
I checked all the cables and the thermistor and couldn't find any issues. When I had issues with the Thermistor or connectivity in the past the hotend was usually turned off and not heated to the maximum. Therefore I assume it is an issue with the board although i cannot see any visible damage like a short.
Here is the end of my klippy.log
======================Extruder max_extrude_ratio=2.078758mcu 'mcu': Starting serial connectwebhooks client 281472831434192: New connectionwebhooks client 281472831434192: Client info {'program': 'Moonraker', 'version': 'v0.9.3-72-g7cdcca3'}Loaded MCU 'mcu' 118 commands (v0.12.0-401-g383b83d78 / gcc: (15:12.2.rel1-1) 12.2.1 20221205 binutils: (2.40-2+18+b1) 2.40)MCU 'mcu' config: ADC_MAX=4095 BUS_PINS_i2c1_PB6_PB7=PB6,PB7 BUS_PINS_i2c1_PB8_PB9=PB8,PB9 BUS_PINS_i2c2_PB10_PB11=PB10,PB11 BUS_PINS_i2c3_PA8_PC9=PA8,PC9 BUS_PINS_spi1=PA6,PA7,PA5 BUS_PINS_spi1a=PB4,PB5,PB3 BUS_PINS_spi2=PB14,PB15,PB13 BUS_PINS_spi2a=PC2,PC3,PB10 BUS_PINS_spi3a=PC11,PC12,PC10 BUS_PINS_spi4=PE13,PE14,PE12 BUS_PINS_spi5=PF8,PF9,PF7 BUS_PINS_spi5a=PH7,PF11,PH6 BUS_PINS_spi6=PG12,PG14,PG13 CLOCK_FREQ=400000000 MCU=stm32h723xx PWM_MAX=255 RESERVE_PINS_USB=PA11,PA12 RESERVE_PINS_crystal=PH0,PH1 STATS_SUMSQ_BASE=256 STEPPER_BOTH_EDGE=1mcu 'nhk': Starting serial connectmcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'mcu 'nhk': Unable to open serial port: [Errno 2] could not open port /dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00: [Errno 2] No such file or directory: '/dev/serial/by-id/usb-Klipper_rp2040_4E363334320E243A-if00'Could this be any other issue than a board failure?
