Jump to content

Recommended Posts

Posted · Board failure - U6 chip burned out. Any tips?

Hi,

 

Has anyone experienced a burned out U6 (voltage regulator I believe) chip on the main control board of an Ultimaker 2? I had the chip replaced and tried it again, but it burned out immediately, so I think there is likely an issue or short elsewhere - perhaps others have had this issue?

 

The printer is about 5 years old and has had moderate use, including a lot of time in a hot box, printing ABS. I first thought that maybe the heat had cooked the chip over time, hence me replacement of U6 was a first try.

 

I want to get the printer working again, as it is great, but don't want to chuck a new board on it before I understand the problem.

 

any help much appreciated.

 

many thanks,

Chris

  • Link to post
    Share on other sites

    Posted · Board failure - U6 chip burned out. Any tips?

    Hi Chris,

     

    I'll think this happen (reported) in here once as far as I'll remember.

     

    As this regulator make 5V DC, you may try to use an ohm meter to see if there is any direct short.

    This mean it's something wrong in the main PCB, but could also be the converter's sub components.

    Also the diode D16 is something that's fail in such an "inductive" converters.

    There is an instrument named trackers, handy for identifying components with shorts.

    There is repair centers that handle such repair..

     

    Good luck

     

    Torgeir

     

  • Link to post
    Share on other sites

    • 1 month later...
    Posted · Board failure - U6 chip burned out. Any tips?

    Same problem here... UM2+ is about 6 years old.

     

    @Riboflavin did you solve your issue? The chip would be easy to replace, but if it's just a symptom and not the cause, we should find the cause first...

    image-39550a56-363e-4598-b799-2cadafd95aee.jpg

  • Link to post
    Share on other sites

    Posted · Board failure - U6 chip burned out. Any tips?

    Diode D16 was also broken, as @Torgeir suggested. Will replace U6 and D16, let's hope this will work.

     

    I found a few "classic bugs" on the PCB... Could they sufficiently conduct to kill the regulator? I assume a component failure is more likely...

    image-771fcf35-d30b-49dc-96cb-dbf27cb1e918.jpg

    image-447054c5-71b4-4bc3-b3ad-ea6502378011.jpg

    image-d5aabcb9-050e-448c-83fa-3fe3c647ed4e.jpg

  • Link to post
    Share on other sites

    Posted · Board failure - U6 chip burned out. Any tips?
    6 hours ago, Alexjwb123 said:

    Hi, I had same issue. Got it repaired and the same component died again.

    @Alexjwb123 did you also replace the diode D16, or only U6?

  • Link to post
    Share on other sites

    Posted · Board failure - U6 chip burned out. Any tips?

    Ah just u6.

    I didn't realise diode needed replacing too,

  • Link to post
    Share on other sites

    Posted (edited) · Board failure - U6 chip burned out. Any tips?

    I can confirm that in our case replacing U6 and D16 helped! The UM2+ is again printing happily, for the cost of about 2$ of spare parts 🙂 Already has almost 5000 printing hours.

     

    In order to replace the parts, you'll probably need a hot-air rework station, solder paste, flux and maybe a desoldering station (vacuum pump) for cleaning the pads after desoldering. I ended up both desoldering and desoldering the IC with the hot-air rework station.

    Edited by dbrgn
  • Link to post
    Share on other sites

    Posted · Board failure - U6 chip burned out. Any tips?

    Hi @dbrgn,

     

    Way to go.. Thanks for the feedback!

     

    The Power supply is in general the fault of about 80 percent of all failures in the electronics, -in general.

    So about 20  percent of the failures is of other causes...

     

    This is all said by experience over a long time. 🙂

     

    Thanks

     

    Good luck.

     

    Torgeir.

     

    • Like 1
    Link to post
    Share on other sites

    Posted (edited) · Board failure - U6 chip burned out. Any tips?

    Here's a blogpost with a summary of the repair: https://www.coredump.ch/2020/08/25/ultimaker-2-repair/

    Edited by dbrgn
    • Like 1
    • Thanks 1
    Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • Help Us Improve Cura – Join the Ultimaker Research Program
        🚀 Help Shape the Future of Cura and Digital Factory – Join Our Power User Research Program!
        We’re looking for active users of Cura and Digital Factory — across professional and educational use cases — to help us improve the next generation of our tools.
        Our Power User Research Program kicks off with a quick 15-minute interview to learn about your setup and workflows. If selected, you’ll be invited into a small group of users who get early access to features and help us shape the future of 3D printing software.

        🧪 What to Expect:
        A short 15-minute kickoff interview to help us get to know you If selected, bi-monthly research sessions (15–30 minutes) where we’ll test features, review workflows, or gather feedback Occasional invites to try out early prototypes or vote on upcoming improvements
        🎁 What You’ll Get:
         
        Selected participants receive a free 1-year Studio or Classroom license Early access to new features and tools A direct voice in what we build next
        👉 Interested? Please fill out this quick form
        Your feedback helps us make Cura Cloud more powerful, more intuitive, and more aligned with how you actually print and manage your workflow.
        Thanks for being part of the community,

        — The Ultimaker Software Team
        • 0 replies
      • Cura 5.10 stable released!
        The full stable release of Cura 5.10 has arrived, and it brings support for the new Ultimaker S8, as well as new materials and profiles for previously supported UltiMaker printers. Additionally, you can now control your models in Cura using a 3D SpaceMouse and more!
          • Like
        • 18 replies
    ×
    ×
    • Create New...