1

So, my print stopped mid go and I was looking at nozzle to see if it was an issue and I noticed that the wire to the thermal sensor had come de-soldered and was touching the other wires on the extruder. They were sparking and then the backlight and lcd screen went out. I’m very concerned that the printer has been bricked. Does anyone have any ideas for troubleshooting and fixing this issue?

2

Power everything down, take off the heater block, then remove the sensor. You will need to order a new one. You aren’t going to be able to just solder a wire back on to the thermistor. If you have a dual extruder printer, you may be able to borrow the other nozzle’s sensor and put it on your main extruder. You’d have to move the plug on the mother board to the other slot. Then you can try to power up, and attempt to pre-heat the nozzle. If it starts heating but can’t detect that the heat is actually rising, then the motherboard’s thermal sensor circuitry is fried and you’ll need a new motherboard. That’s a safety issue so you should make sure that works before attempting anything like printing. In fact the firmware should detect that it isn’t seeing the expected rise in temp, and shut itself down. You can get all the replacement parts from qidi, may not be free, but they are pretty good about responding if you fried parts.