Hey folks,

Got a bit of a weird problem. I just had to replace the heating element in one of my extruders. I bought the correct part from a re-seller recommended by the manufacturer, and the seller said it was the correct part. However, after installing it, it starts to smoke badly when heating up. The thermocouple reads it never reaching the target temperature, and the printer gives an error timing out. However, using a digital noncontact thermometer, I was able to see temperatures as high as 300 degrees, and the heating element gets red-hot(not something the working extruder does). My best guess is I did something wrong on the install, but am wracking my brain over what it could be.

The printer is a Wanhao Duplicator 4S, which as I understand is a clone of the makerbot design. It uses a Mark 10 Extruder.

Any assistance would be appreciated. I've been simply not using that extruder for a couple of weeks but would like to get back to dual extrusion.