after printing with my k8200 for 4 years now i never had this issue… I recently switched to the Z axis upgrade and upgraded the firmware as instructed. I also did a PID auto tune because i have another hot end that had an unstable temperature.
As i was printing and reaching the best performance i ever had, it stopped. The controller on the printer went blank and the leds went off, except for the USB leds they stay on and don’t blink anymore. My pc recognizes the USB going in and out my pc but when i try to connect it times out, no response of printer. The PSU is still working. As it is now i don’t get anything on my controller and i am quite scared the controller board might be broken.
I think the power isn’t getting trough on the board, the usb leds don’t flash and i can’t get connection and as i said the controller screen doesn’t turn on.
I hope someone can help me.