English forum České fórum Polskie forum Forum Français Forum Italiano Foro Español Deutsches Forum Recent Posts Announcements Forums English forum Original Prusa MK3.9S Assembly and first prints troubleshooting Notifications Clear all Assembly and first prints troubleshooting | RSS Topic Title Last Post Views Posts Author MK3S to MK3.9S - Motors have different connect... By JoanTabb on Mar 24 357 2 kickthebaby MK3S --> MK3.9S Kit randomly resets By SS220 on Mar 12 294 1 SS220 Mk3 to mk3.9s upgrade y calibration test fail. By majestix508 on Jan 05 628 3 Larry Burkett 3.5S Upgrade RPM test fail By Jeff on Dec 03 488 1 Jeff Error 20615 - Unable to verify the extruder ty... By AvariCe on Oct 05 830 2 ritchim008 Belt tension web app By Brock Lesnar on Oct 04 713 2 mk Share: