Huge noise from XY movement caused by motor-A

Bambu Lab X Series Bambu Lab X1C
1

I had huge layer shift in one of my last prints. Since then the motor-A is causing huge noise when XY movement is done. No issues with motor-B. I could not realize anything wrong with movement or belt so i think it’s not mechanical issue.

The issue starts after 1-2min when stepper motor is getting warm. I am usu if the problem is the motor itself or the motor driver. Any idea how to check this? In Wiki i could not find any answer on this.

Thanks for your help.

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Unfortunately i cannot upload video here in the forum.

2

Your video will not play. I will not download it for security reasons.

3

For me it’s working and you do not need to download the video.

But i think i have found the issue.

I changed the cable from motor-a with motor-b on the PCB but the problem remains on motor-a which means the PCB is faulty and not the motor. I will order PCB now.