Extruder dust. Additional bowden tube friction from going through the whole AMS system vs the external spool is overcoming whatever little grip you have left. You can test it quickly by holding the external spool filament while going through the motions. You’ll likely hear skipping - you shouldn’t normally be able to hold it.
@joeturczak Sounds like a communication error between the printer and the AMS and it’s not getting the signal back from the filament sensor in the toolhead. The only thing I suggest is to check all the electrical plugs are in correct and do a factory reset.
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BBL support mailed me an AMS Main Board that I need to replace. Hopefully this will solve my problem.
I found this Wiki page:
but no video yet.
Any advice from anybody that has already gone through this?
Wish me luck…
It’s quite easy to do. I would suggest printing one of the alignment pieces to fit while you have it apart. e.g.:
AMS Filament Pull Back Error Fix by YelTrik Designs - MakerWorld or
Also, suggest you remove the screws on the old board first, then place the new board above the old one and swap over all the wiring connectors one at a time. Then screw down the replacement. That way you won’t have to mark them and won’t have to worry about mixing any of them up.
Thanks! I managed to replace the board and the AMS starts up ok, but the original problem with loading filament has not been solved.
I messaged support again, waiting for a response.
Not impressed with their QA… unless this is a rare exception.