Bad Bed Heater Terminals on MiniRambo? - General discussion, announcements and releases https://forum.prusa3d.com/forum/original-prusa-i3-mk2-s-general-discussion-announcements-and-releases/bad-heater-terminals-on-minirambo/ Prusa3D Forum Discussion Board en-US Tue, 17 Mar 2026 09:09:24 +0000 wpForo 60 Bad Bed Heater Terminals on MiniRambo? https://forum.prusa3d.com/forum/original-prusa-i3-mk2-s-general-discussion-announcements-and-releases/bad-heater-terminals-on-minirambo/#post-750668 Tue, 20 May 2025 21:09:10 +0000 A little while back I bought a new miniRambo to replace my original that had gotten a bit beaten up on my MK2S over the years and many moves. However not much more than 10 hours of printing with the new board, I began to get bed heater issues. I reset the printer, unplugged and replugged everything, and ran a self-test. The bed heater continued to fail during the self-test. I ran a manual test with a 12VDC power source on the bed, and it heated up fine. I checked the thermistor, even though it seemed to be working, with a multimeter and the manually heated bed, which it also responded to. At this point I'm thinking the issue is with the board, but I wanted to get some additional thoughts.

Cheers,

Jack

 

Cheers,

]]> General discussion, announcements and releases Jack R https://forum.prusa3d.com/forum/original-prusa-i3-mk2-s-general-discussion-announcements-and-releases/bad-heater-terminals-on-minirambo/#post-750668