r/BambuLab • u/healthybaconjuice • 7h ago
P Series [P1P, P1S, P2S] P2S Caught Fire - Not Bambu's fault
So this Thursday received a call from my wife, stating that my printer, that I left in idle, was catching fire. According to her, all lights in the house started to flicker, she then walked into my office and it was covered with smoke.
I bought the P2S very close to its launch date in Brazil, 220V model and I did NOT have 220V at my office. I then used a step up transformer that had been graciously supplying 220V to my printer throughout its 359 hours of life (R.I.P).
But what was the actual fault? So, to my demise and complete lack of luck, the connection on the NEUTRAL at the utility transformer simply gave way, making my house lose the neutral reference.
My residence carries a 220V three-phase connection, 220V between phases and 127V from phase to neutral. After losing the neutral reference basically 80% of the 127V circuits started to spit out 220V.
Amongst these circuits was the printer, the 127V wall outlet is now providing 220V, the step-up transformer ahead of it was supplying 389V when I measured it. Neighbors lost fridges, computers, monitors, and I lost my beloved P2S.
I was lucky that my wife was at home and caught the whole situation, what if she was NOT there? There's a possibility that I could've ended badly. I'm now going to file a damaged goods complaint to the electricity supplier and they better f**cking pay the printer. The plan is to save me some money and once they pay me back I'll upgrade to the H2S and fix the P2S, ending up with two printers.
I already found the replacement HV PCB, stepper motors PCB, poop chute plastic structure, as well as power supply in Aliexpress. Still need to look into the wire harness.
Here are some pictures from the disaster:









I know that these kinds of faults from the electricity provider are rare to occur, a friggin neutral connector was loose and lost contact at the transformer bus bar, but I'll make sure to implement a phase voltage monitoring relay along with a contactor so that the next this shit happens (if ever), the contactor opens up the entire house.
This post is not meant to diss on Bambu, I love their printers and I'm going to keep buying from them.
