r/BambuP1S

I really don’t know where to go from here. Pics 2 and 3 are the aftermath of the printer randomly shutting down during a print, followed by a dead AMS when it started back up. Contacted Bambu support, they sent me a link to purchase a new mainboard for $60, saying my printer was out of warranty. Alas, the new board caught fire as soon as I turned the printer on (see pic 1). I was extremely careful to ensure everything got plugged into the correct connectors. I have never disassembled my AMS prior to this issue. I checked all resistances across the pins according to Bambu’s debugging guides, voltage is correct on the power pins. I can’t afford to buy a new AMS for this, and I’m not sure what to check next.

Any insight would be so so nice.

Why would this happen? I was trying to print a desk goose

Hello,

I recently replaced my nozzle due to a persistent clog, but I have noticed significant artifacts in my prints since the change. Could you please provide some advice on how I might resolve this issue?

Print info:

- Printer: Bambu Lab P1S

- Slicer: Bambu Studio

- Filaments: Black Inslogic PETG / Yellow Bambu Lab PETG Basic

- Temp: Bed 70°C / Nozzle 245°C

- Speed: walls 200mm/s, sparce infill 330mm/s, top surface 200mm/s

- Retraction speed: 30mm/s

I have some pla filament stuck in the extruder and when I use the unload feature to heat up the nozzle, I cant even pull it out with needle nose pliers.i have even raised the temperature to 300C, still nothing. Do I have to further continue disassembling it? Is it stuck on a gear?

On my P1S, I recently decided to upgrade my stock .4mm hotened to the Bambu hardened steel variety.

Before this, my prints were really dialed in and honestly couldn't tell you the last time I had one go bad.

I print a lot of clay cutters, clay cutters, and other clay tools for my wife as well as a lot of organizational type things (gridfinity, multiboard, etc)

As soon as I swapped out the hotend (the entire assembly) I started having issues. Infill turning into spaghetti, bed adhesion issues, surface layers turning into balls of goo .... all of it.

Using Claude, I spent days troubleshooting. Filament settings, drying filament, printer settings, you name it.

Ultimately, I got to the point where I decided to swap into my .6mm stainless hotend...just to see. Perfect prints from the first one. Ok, let's go back to .4....nope, same issues. Purges, cold pulls, disassembled the entire printhead, cleaned and reassembled, and at that point I couldn't even get a successful purge strip and 1st layer.

Ok, let's try the .2... Perfect prints.

This thing is defective, right? It has to be. I ruled out everything else physical. I reverted to stock profiles. I used a bigger and a smaller hotend Assembly...it has to be the hotend itself. Right?

EDIT: anticipating...

Yes, I washed the plate with soap and water. Yes, I ran calibration. Flow calibration as well and even it failed. Yes, I changed the setting for the nozzle on the printer Yes, I had the right plate selected in Bambu Studio Yes, I did Auto Bed Levelling.

Taking the hotend/.4mm nozzle out of the equation solves the problem.

A full print earlier it was in a different spot. I just cleaned the plate too. Is it a venting issue? Is it a dirty plate issue?

Using p1s

Been getting the sound from a couple of my spools, but not sure where exactly. Please see attached vid. I’m not sure where or why it’s acting up. P1S

So I recently got this weird issue shortly after installing the sunlu ams heater, though I don't think the problem is related to that, randomly during a print, usually close to the beginning, no matter what filament I'm using or hot end im using (the 0.4mm or the 0.2mm) it will slowly stop using filament and either say the the ams motor overloaded, or the extruder failed, or sometimes it will just keep printing with air, most of the time just telling it to retry would fix it but it got worse over the day, the filament would make it all the way to the extruder and then say it might be jammed, after taking it apart I'll find a piece of filament in the hot end I'll usually have to get out then it will start extruding again until another piece gets stuck in like 30 minutes than I have to take it apart again.

So far I've checked the ams buffer spring

Did a complete teardown on the extruder and couldn't find anything

Checked all the ptfe tubes

Took apart the ams just to see if there was anything wrong in there and couldn't find anything wrong

All the filament was recently dried

And most importantly I restarted it

If anyone has even an inkling of an idea on what might be wrong I am up to try just about anything at this point