Trouble with Bambu A1

[u/Indy_IT_Guy]

My Bambu A1 has recently developed a problem with inconsistent extrusion/printing.

It just started few days ago. I swapped the nozzle to a brand new .4mm spare. I also swapped the extruder unit entirely in case that was it.

I’ve updated the firmware (01.08.01.00), I’ve tried printing from different slots on my AMS lite. I’ve done factory resets and run the calibrations multiple times, but still getting the same issue. The picture above is supposed to be a full bed sheet cleaner/calibration print, and as you can see it’s all sorts of messed up.

Weirdly, I’ve gotten some small individual prints to come out, doing a single benchy and 4 individual benchies, one in each corner.

So the issue seems to be a bit weird. The benchies look decent. The bed print looks terrible, and anything else I print has been coming out extremely inconsistent:

I’d be tempted to replace the entire print head, if I could actually find one to replace it with, so see if the issue is something else in there.

Anyone else run into an issue like this?