I have been printing with the Vertex for quite a while now (~1.5 years) and have been very fond of it.
However two weeks ago I started having some random freezes.
Basically what happens is that it prints for 2-5 hours, then the printer head seems to simply stop (or leave the print area), the LCD screen freezes (and I am not able to control anything with the knob) and the heated bed and extruder will turn fully on (!!!). The last part is obviously the most critical.
The LCD does not show that the extruder and heated bed is fully on (as it is frozen) however once I reset the printer, the shown temperature (~235 deg for extruder/70 deg for heated bed last time) clearly indicated that there is no control of the heaters.
Can anyone suggest what may be the problem?
I have not changed anything; the printer simply started doing it from one day to the other… The extruder can be moved relatively easily by hand. I have not updated the firmware to the newest edition, but since I have never had the issue before I doubt it will help.