My school has a Taz 3 that stopped connecting via USB. It was working last Wednesday night for me and then Thursday afternoon it stopped connecting for the one student who is allowed to use it unsupervised. I checked it today and had the same problems that the student reported. No hardware or software changes had been made.
I’m using a Mac with 10.13.1 and connect using Printrun-Mac-18Nov2017. I also tried connecting with Cura 21.08. The student has a Windows 7 and Windows 10 machine and also tried connecting with Printrun and with Cura.
When connecting with Printrun, it comes up with
and will continue printing out SENT M105 as long as the USB cord is connected to the machine.
The printer still works using the SD card.
I’ve tried changing the USB cord and changing computers. The only hardware issue that we have had lately is an issue with the power supply’s potentiometer needing to be adjusted to increase the voltage. However, I checked that this morning and it was not an issue.