What slicer are you using? Have you made sure the correct temperature and filament diameter is configured in your slicer software?
Have you checked your Esteps, i.e. put a mark on the filament say 100mm from the extruder entry, choose to manually extrude 50mm at the correct temperature and measure if the line has moved down 50mm?
When you say it doesnt extrude while printing, does everything else still move as expected? and does any plastic come out at all or just nothing at all?
Have you checked your Esteps, i.e. put a mark on the filament say 100mm from the extruder entry, choose to manually extrude 50mm at the correct temperature and measure if the line has moved down 50mm?
When you say it doesnt extrude while printing, does everything else still move as expected? and does any plastic come out at all or just nothing at all?