spooner222

I am having a Problem with my original ultimaker from 2012. prints suddenly have slight under extrusion. The temp is set to 207*C but the ulticontroller shows 184/185 and its not reaching 207. I tried the print again and at first it reached 207°C, but after 20min the temp was at just 176C° and of course there was no extrusion. I also noticed that the heatup time was very long. What could be the problem?