drknow1 wrote:I had the same thing happen. The screen went blank when I was trying to remove the nozzle. The hot end got twisted. Something in the hot end could be broken but there isn't much info about how to troubleshoot.I just ordered fuses but am concerned that the blown fuses may be a sympton of another problem. How do I troubleshoot this? I've emailed support and chatted with the online person. No email response for 5 days and the all the chat session told me to do was email support. I really need some help here.
I doubt that anything got broken. Anytime you are working on a hotend or its components get it up to the temperature you need and then shutoff all the power. The twisting and turning on parts like the
hotend causes the resistors to momentarily short and if the power is on fuses blow. Carefully inspect the hotend before turning the power back on, and make sure none of the resistor wires are touching
heat block or anything else that can short them out. Just a tip, if you ever need to replace a resistor in the hotend, instead of resistors use the 40 watt 12V ceramic cartridges that they make now. I
believe they should be 6mm in diameter.