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Yes you both were right. Its probably fried. Did all the updates which were successful and still no action taken by the hotends. Also proved a proper fit on each connector on hotendboard. I will now order a new one and hope its done afterwards Will tell if it worked. Thanks and best regards!

Thanks for your fast answer mate! I will try this by latest tomorrow and let you know if it worked. Today also the second Hotend failed to heatup so no excuses anymore - gotta fix it:')

Hey, i have a problem with my pro3 (6 months in moderate use). It worked fine until 1 week ago. Since then the right extruder will not heat up and is ending up in an error message which says temperatur is not rising as expected (not word by word). It is not related to the hotend, since the left one ...