I have a problem with my large production machine never leaves the wire but a continuous moving xy z.
I looked on the forum but I did not find a valid answer. I may be a problem with the temperature. The office has air conditioning and may be the cause.
and then the roll of wire stuck on the holder
except when the parts are at the end I am very happy with the result. but now I want to be able to produce large parts
Make sure the extruder power cable is seated properly
Make sure your top fan is working properly, ( mine kept clogging after an hour or so in a print) Needless to say that was very aggravating. I realized that it wasn't clogging instead it was getting to hot, and not feeding properly.
Also I believe it is best to unload the filament when it stops printing, vs "loading" the filament. I found that out of the 5 or so times I thought it was clogged in reality all I need to do was unload and cut the filament in a clean spot, and then reload the filament.
Finally check and see if your heater is maintaining heat or is it cooling during the print.
Granted I am a NOVICE / NU-BEY, but those are some of the things I would try.