Jump to content
Ultimaker Community of 3D Printing Experts

Brown spots on PCB

Recommended Posts


I will probably be replacing my feeder motor, so I screwed off the pcb cover to see what the connectors for the steppers look like. I noticed some brown spots on the pcb:



Is this normal? My machine has been on for about 3900 h, and has printed about 2500 h.



Share this post

Link to post
Share on other sites

Well I don't consider it normal... but mine looks the same already for a long time so it's probably no problem...


Well, white plastic gets brown with heat. That's normal. But of course one would not see it if the plastic would have a different color. That's maybe one reason why in the past all pcbs were green or brown... ;)

Share this post

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

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 18 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!