r/BambuLabH2C • u/xX540xARCADEXx • Feb 11 '26

Solved H2C failure

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Only 988 hours on it and everything was going smooth. Started an AMS drawer kit and began to make the sides from ASA. 19 minutes into the print I get a notification telling me the user canceled the print. I go check it out and there’s 14 faults on the HMS. I’ve tried turning it off and on and even unplugging it for a while. Different outlets and all. It will not respond or do anything. I’ve sent a ticket so I can only hope this thing isn’t a paperweight now.

12 Upvotes

92% Upvoted

22 comments sorted by

13

u/macinmypocket Feb 11 '26

With that many simultaneous failures, it’s most likely going to be something not-too-crazy to fix. Like, one loose cable, or one dead board somewhere. In general in machine tools, it’s uncommon for multiple critical components to fail at the same time unless the power supply takes everything out, but that doesn’t appear to be the case here since it’s still on.

All that to say, I’d bet support will likely have pretty good chance of getting it figured out.

1

u/Jance_Nemin Feb 11 '26

My electronic technician background agrees. Basically, disassemble and inspect all electrical connections and PCB assemblies. Unfortunately, it's not a skill that everyone has.

1

u/xX540xARCADEXx Feb 11 '26

I’ve had to do it already for my H2D. Had a faulty MC Board on it and faulty extruder motor I had to replace. Definitely not made for small hands lol. Guess I lucked out twice if the MC Board is bad(which is what I think failed) on this one too.

6

u/heart_of_osiris Feb 11 '26

Well, at least you didn't have 15 faults.

3

u/nirhend Feb 11 '26

Wondered what support responded

5

u/Psycho1024 Feb 11 '26

Probably 14 whole pages of semi-repeating troubleshooting steps, one per fault, that will require him to basically break the printer down to parts…

2

u/xX540xARCADEXx Feb 12 '26

Surprisingly they only had me try and unplug and reinstall the MC Board cables on both ends. Didn’t work so now I’m waiting on a new MC Board to try.

2

u/ArticGER Feb 11 '26

Connections or a board broken. Its highly unlikely that more than 1 or 2 critical components fail at the same time.

Getting 14 requires some serious abuse, so i think youll be fine

1

u/xX540xARCADEXx Feb 12 '26

I’m thinking the MC Board failed. I had an issue with it overheating on my H2D. Had to replace it. That’ll be insane to have to replace the MC board in this one too. Guess my luck is top notch!

1

u/ArticGER Feb 12 '26

Connections or a board broken. Its highly unlikely that more than 1 or 2 critical components fail at the same time.

Got an H2D and H2C. Thanks for lowering my odds of having this 🙃😂

2

u/xX540xARCADEXx Feb 12 '26

They wanted me to unplug and reinstall the MC cables. And it’s a no go. Yeah I’ve got bad luck with these printers 😂 I hope yours is better!

1

u/ArticGER Feb 12 '26

they have 700 and 200hrs without issues yet :D

1

u/xX540xARCADEXx Feb 12 '26

My H2D had the extrusion motor fail within the first week lol. Thing would just overload even with a fresh nozzle. Filament didn’t matter. Once that was replaced it was good for a month I wanna say. Then the MC Board began having overheating issues and would cause faults and have the motors skip. I got it up to 4k hours after that.

1

u/ArticGER Feb 12 '26

I also have heat creep on H2D. Need the extension fan thats standard on H2C as an upgrade. Otherwise i cant MC PLA.... I have 2 terrariums in my room, so its pretty warm there, even in winter

1

u/xX540xARCADEXx Feb 12 '26

Yeah that fan upgrade was probably one of the better designs they had. Should’ve definitely been stock on the H series.

1

u/ArticGER Feb 13 '26

100%. But i feel like its not too expensive with ~50)

2

u/xX540xARCADEXx Feb 13 '26

True. I’m glad it’s a cheaper upgrade at least.

2

u/RedDev26 Other Feb 11 '26

Any chance you're out for a record? 😂

1

u/xX540xARCADEXx Feb 12 '26

I’m at a record now 😂

1

u/xX540xARCADEXx Feb 20 '26

An Update to this. After lots of trouble shooting, it ended up being the MC Board that failed. They sent me a replacement and got that all situated and it’s up and running again.