My Lulzbot mini has been a great printer over the last few years, I have probably put 40 Kg of PLA/ABS through it. Yesterday I had a broken thermistor wire, so I unplugged the machine, removed the print head, and replaced the thermistor as per instructions online at ohai.lulzbot.com. After installing the thermistor I plugged it back in to my computer and turned it on. It connected via USB no problem when using the latest version of Cura - 2.6.69. However it is unresponsive to manually moving x, y, z, or temp changes to bed or nozzle from the Cura interface, and unresponsive to “start print”. I also sent it simple move G-code commands from the printer control in Cura and it didn’t do anything. If I unplug the USB then Cura recognizes that the printer is not online. When I plug it back in and hit connect then it says it is connected via USB. But apart from that little handshake I can’t get the printer to do anything.
So what are my options to determine the next step?
How can I check if the Rambo board or the Uno are the problem?
How do I diagnose the issue?
Many thanks in advance.
I love this printer and this is the first real issue I have had with it in 2 years.