I have had the same thing happen twice where my printer is about 7 hours into a print and it just stops. The printer stays on but the extruder cools down as well as the bed. I haven't been there right as it stops so I'm not sure exactly what it's doing.
I am fairly new to 3d printing and I tried some southtech clear filament for the first time and I've had some problems with it and can't seem to figure out what is wrong (assumably with my settings). I am experiencing really stringy prints. The middle infill is alright but the walls arent turning out at all.