I have some issues with my Snapmaker 2.0 A350 lately with the unit stopping during 3D printing. I have had many long print sessions without incident, the longest being 150 hours for a scale model an engine block so these are new occurrences. The touchscreen and enclosure lights would just shut down but the power supply was still ‘On’. I would then switch the power supply off and then back on and the unit would usually go into power outage recovery mode. At first I thought it was a bad connector because I moved the power supply and when moving the connector on the power supply back and forth I would get a flicker in the enclosure lights. After removing and reseating the connectors I would get 100 hours of printing without interruption and then this morning it stopped on a new print without power outage recovery. I restarted the print since it was only about an hour into the job and it powered off again almost immediately. I moved the power supply so that I could put easily see the power monitor I had placed before the power supply.
I had placed the monitor in the power supply previously and saw that the unit usually operated around 90 watts once printing but now I notice that it will stay around 90 watts and then jump up to 310 watts for about 4 seconds or so every 30 seconds (those times are not accurate just ballparking; have not watched with a timer to get accurate counts; didn’t think that was the important bit here). I am not sure if it was doing that before but I can see it being necessary for increased power for the heated bed. My concern is that from the Quick Start Guide page 7 it lists the rated power as 320 watts.
So I have several questions that I am hoping to get some feedback on:
a) What are the average power requirements you are seeing on your machine during 3D printing? I want to make sure I am seeing somewhat typical draws before I fully condemn the power supply. For all I know my heated bed could be drawing more current than needed and causing the issue.
b) I know that there have been several other mentions of the power supply being underpowered, how did anyone resolve this? Is there information on the plug so that I could purchase my own heftier power supply? I know that I could probably figure it out but I would rather go down a path someone else has blazed.
c) Is SnapMaker going to provide a beefier power supply for purchase? I would rather buy an official approved one rather than cobble together one on my own. I have several here that could do the job but I like the fact that my SM2 is not a Frankenstein yet unlike my other 3D printers with all the upgrades and repairs.
On the next failure I will take a look at the logs, just found out how to get to them. I suspect there will be something since the extruder head moves to the side before the unit goes off; so I suspect that it is a controlled shutdown.
There is a new firmware version September 1st that I have not applied yet that will resolved an issue I saw with the print stopping at 99% which I am sure is a different issue. I am hoping that might give some resolution to this also.
Thanks for any feedback and help you can provide.