I’ve had my Lulzbot mini since 2014 and have had lots of good use out of it. The power supply was upgrade a few years ago and I’ve been keeping up to date with firmware and the Cura for Lulzbot (current version 3.6.21).
Today, after years of printing I am unable to connect to my printer via USB and I suspect it is serial communication issue with the RAMBo board within the unit. Cura can see the printer, as well as my Device Manager reports it as working properly. I’ve updated the drivers on my windows 10 PC and made sure the OS is up to date (and of course restarted). Also tried a different cord.
When I open Cura it says ‘USB device available’ and when I click connect, sometimes says ‘connecting’ for a few seconds, but mostly says ‘can’t connect’. Baud rate at 250000 (tried em all anyway) and com port selected to auto. I tried to upgrade firmware but I get a window saying ‘communication error’.
I’ve opened up the unit and inspected the fuses which were all fine. I suspect there may be a failed onboard component within the serial communication circuit at some point but I am not an electrical engineer unfortunately so I think my experience has run out.
If you guys have an suggestions on what else I can attempt to fix myself or to just suggest a board repair or replacement, I would appreciate the support!
I’ve emailed lulzbot support twice over two weeks without any response so I’m hoping somebody can help me here.