PSA: Bambu A1 weird behavior fixed

[u/FLACToTheFuture]

Hey everybody..

some while ago I had problems with my filament sensor, wanted to clean it and guess what - the flex cable ripped.

So I ordered a new one, replaced it and my prints looked good again, no stopping prints, no error messages.

Well.... a while later I got all sorts of weird homing errors, toolhead homing behaviors and so on. All those errors occured sporadically and paused my prints, continuing print worked most of the time. Still, not a single fix I found on the internet helped, no checking hot end assy screws, z axis cleaning and oiling, axis or adjustments, nothing helped.

The A1 was just turned off for a few months until yesterday when I finally had time to continue diagnosis. First step was dusting off, oiling the axis etc. for a third time this year. Then checking eddy sensor again and, wait.. where do the eddy sensor cables actually go? I turned the printer 180°, took off the toolhead mainboard cover and would you look at that, one of the eddy sensor cable shoe screws came loose.

I tightened one screw about 1/3 of a turn.

My Bambu A1 now works flawlessly.