Hello everyone. Hopefully someone much smarter than me can help me out here. after 2 years using my printer this occurred: When start printing from sd_card everything works fine. Bed is heating, extruder is heating,.. when hit the right temperature,.. extruder goes to the "home" position. Then it goes up towards the starting point of the print. At this time it feeds a little bit of filament just before the actual print starts. However when the actual print starts the (filament) stepper motor continuously starts going slightly forward and then backwards so no filament is fed into the extruder. However the printer keeps on going thinking that it is..
What have I done so far trying to solve this:
1) Calibrated the bed, and even lowered it to much to see if it feeds fillement without and obstruction due to the printing bed. This made no difference
2) Preheated the nozzle/extruder to 200c and then in the menu (moving x, y, z, extr) feeding the extruder, to my surprise this works perfectly. So there is no blockage of the filament and the stepper motor does work.
3) Just in case I switched the stepper motor with a spare one,. No difference.
So in short, up to the start of the actual printing, the extruder/stepper works fine, But when starting the actual print it does not feed filament anymore.
Just one bit of info that might help: I took out the extruder stepper (but kept it connected) and as mentioned the motor works great until the moment of actual printing starts. Then it does nothing anymore other then Turning a little bit back and forward. When this occurs the shaft/turning can be manipulated by hand. The same result was with the replacement stepper.
Can anyone make some sense out of all this?
Thank you so much in advance. Cheers Jeroen (Amsterdam, The Netherlands)