I have SKR-3 EZ with EBB42 v1.2 connected to the SKR via the MCU CAN BUS port. I decided to replace my hotend with a new one, and it didn't work. After a few tests, the EBB42 stopped working. The blue LED did not light up. While troubleshooting, I found that there was no power being supplied from the MCU CAN BUS port to the EBB42. I connected the EBB42 to the PSU supplying the SKR-3 and the EBB42 worked again; hence, the issue is isolated to the MCU.
The new hotend is definitely defective, but I can't tell whether it caused the MCU issue, or the MCU damaged the hotend.
I checked the wires and the CAN connector and found the connection OK; but for some strange reason, the SKR-3 CAN port stopped supplying 24V.
Is there a fuse that I can replace? or any other suggestions to restore the CAN port power on the SKR-3?
I have SKR-3 EZ with EBB42 v1.2 connected to the SKR via the MCU CAN BUS port. I decided to replace my hotend with a new one, and it didn't work. After a few tests, the EBB42 stopped working. The blue LED did not light up. While troubleshooting, I found that there was no power being supplied from the MCU CAN BUS port to the EBB42. I connected the EBB42 to the PSU supplying the SKR-3 and the EBB42 worked again; hence, the issue is isolated to the MCU. The new hotend is definitely defective, but I can't tell whether it caused the MCU issue, or the MCU damaged the hotend. I checked the wires and the CAN connector and found the connection OK; but for some strange reason, the SKR-3 CAN port stopped supplying 24V. Is there a fuse that I can replace? or any other suggestions to restore the CAN port power on the SKR-3?