iFixit - Answers With Device "Bambu Lab 3D Printer"

Bambu A1 Mini: Bambu Lab A1 Mini extruder clicking and filament feed issue

Mon, 09 Feb 2026 22:08:20 -0700

Hello,

I’m trying to troubleshoot a hardware issue on my Bambu Lab A1 Mini Combo 3D printer and would appreciate any guidance.

Hardware reference (for clarity): Bambu Lab A1 Mini Combo 3D printer

Issue description:

During prints, especially at higher speeds or when more filament is needed, the extruder begins to click repeatedly and the filament feed becomes inconsistent. This often results in under-extrusion or gaps in the print. The printer pauses or slows unexpectedly as well.

What I have checked so far:

Filament spool tension and re-feeding
Nozzle temperature settings
Cleaned the nozzle and heat break
Verified filament is not tangled

At this point I’m trying to determine whether this is likely due to a mechanical feed problem (gears, tensioner, idler), a drive motor issue, or a sensor/stepper calibration issue.

Specifically, I’m interested in:

Common mechanical causes of clicking extrusion on this or similar models
How to inspect the extruder gears and tension assembly safely
Any recommended checks for stepper motor performance or idler alignment

Thanks in advance for any repair/inspection advice — I’m trying to identify whether this is a hardware fault or a setup calibration issue.

⟐ Answered February 09, 2026 at 22:08 MST

Bambu labs P1S 3d printer: No power to printer

Fri, 23 Jan 2026 09:55:28 -0700

The printer is plucked in but no power to the printer and AMs

⟐ Answered January 23, 2026 at 9:55 MST

Bambu Lab 3D Printer: will not feed while printing

Wed, 12 Nov 2025 16:29:24 -0700

will not print

Bambu A1 Mini: My printer won’t load

Fri, 24 Oct 2025 17:47:16 -0700

My printer will not load my new filament and will get stuck on the step to push the filament in even though it is already

Bambu labs P1S 3d printer: How can I fix the ribbon cable for the extruder filament sensor?

Tue, 25 Mar 2025 00:55:35 -0700

I have snapped the ribbon cable, connecting the hall effect sensor board of the Filament Sensor in the extruder assembly, in half.

I haven’t been able to find an exact pinout, but I want to know if it’s possible to fix a ribbon cabel of that size. And if yes, how can I perform this fix and what tools do I need? (I have a ryobi soldering iron, oscilloscope, multimeter, etc)

⟐ Answered March 25, 2025 at 0:55 MST