I have been having the most annoying problems printing.
During a print, part way through it just stops. I have tracked this down to two
causes. The first was dodgy connectors supplied with my original printer and
the second appears to be the dodgy power supply that came with my original printer.
The faulty
connections would break contact with the hot end thermistor. This would make it
think that the thermistor was cold and stop extruding plastic reporting “cold
extrusion prevented”. At other times it would report something like “Min temp
exceeded, Kill();”. This motivated me to replace all the connectors and re-wire
my printer which was a big job.
The power supply had no evidence I have observed other than
changing it makes prints finish. After a while I gave it another shot and sure
enough it failed again.
