I used my printer for a year and a half now. And yesterday, when I started a print, I smelled something burned. I immediately stop my print and see that on my extruder board there are some burn marks on the 10 pin cable plug. I remove the plug and see that the fourth pin is burned. I don’t know what is wrong with it. When I put my printer on again, it started burning again. And lights began to turn off again, looking like it was shorting.
What do I do?