The last few days I have had a problem with fillament constantly getting stuck in the printhead and me having to manually cut the fillament off above the printhead, unscrew the head from the tube fitting and pulling it out through the ‘front’. This time however, I forgot to unplug the power when I disconnected the thermistor and heater and accidentally shortened 2 of the wires for a short while which led bit of ‘magic smoke’ comming out from underneath the screw terminal. When I plugged everything back in, and started up the printer again, it keeps giving me the ERR:MINTEMP error which leads me to believe that something broke when I shorted it.
The insulation on the thermistor has also come off lately and I had to insulate it by putting a tiny piece of PFTE tube around it to prevent it from making contact with the heater block. Before, I have got the same ERR:MINTEMP (or possibly MAXTEMP) error when there is a connection between the thermistor wires and the metal parts of the printhead. I have checked with a multimeter and there is no connection between those parts right now and the resistance of the termistor is what it has always been.
I have tried looking for any damage on the PCB on the printhead but I can’t see anything, it’s possible that one of the traces on the PCB is burnt though.
I can’t find any distributor in sweden that sells that PCB.
Edit: I should add that I checked the resistance between the two middle screw terminals and it looks like there isn’t any connection between them…
Edit2: Because I don’t use a second extruder, would it be possible to use the circuitry for the left extruder instead of the right extruder?