Sudden System Failure of A1M

Hey guys,

Recently I had a pretty obscure failure of an A1 Mini machine.

An overnight print job was started. I came back the next morning and the print had stopped in place approximately 25% through the print process.

Upon checking Bambu Studio, HMS did not throw an error. Upon attempting to wake the screen by tapping it, the screen was unable to wake and unresponsive.

Additionally, in this unresponsive state, the nozzle and bed were still heated to full printing temperature.

Ultimately this caused caramelized PLA to cake on the stainless steel nozzle.

Upon power cycling and reslicing, this issue has not been reencountered.

Has anyone else experienced a similar failure? To me it seems like a one-time failure of the system’s firmware, but it could be ideal to raise awareness or ask the community.

Also, the nozzle was unable to be removed for inspection until it was heated to 250 Celsius, seeming that some PLA material was holding it in.

A check for a potential nozzle clog was performed, and the nozzle was not clogged. This still seems like a firmware bug.

Happed to my P1S and H2D, I had the replace the hotend assembly on H2D

Had to replace nozzle on the A1 Mini too. Never happened on my P1S though.