P1S randomly powers off during prints on latest firmware

Bambu Lab P1 Series Troubleshooting
1

Hello,

I have a BambuLab P1S and recently I started having an issue: the printer randomly powers off completely during prints. Sometimes it happens after only 5 minutes, other times after 5 hours. It’s very inconsistent.

I am currently running the latest firmware on both the printer and the AMS.

Has anyone else experienced similar random shutdowns with the newest firmware?
Could this be a firmware bug, or should I suspect a hardware issue (mainboard, PSU, toolhead board)?

Any help or advice would be greatly appreciated.

Thank you!

2

I had something similar happen but it was on a previous firmware. With mine it was the wires connected to the power inlet. One of the connectors had worked it way loose enough that it was making sporadic contact. If you unplug it and take the back off you can see/feel if the connectors are still fully on. Here’s the official info on the the inlet: