Jump to content
Ultimaker Community of 3D Printing Experts

Recommended Posts

Just got back to work on my Ultimaker Original Plus: my dual 40mm 12V fans have stopped working.  One of the fans had seized up, and I bought replacements to fix the issue.  However, after soldering the new one in place, they wouldn't run.  They're wired in parallel.

 

The wire going from the board to the fans is OK, just tested that.  I'm not sure if the Fan PWM output on the board isn't good anymore, or what.  I tried testing the voltage of it when the fans are on at 255, but I'm not sure what the normal voltage is.

 

-Brent

Share this post


Link to post
Share on other sites

Thanks for the reference.  I picked up 10 of those diodes from Digikey (in case I screw up soldering a few times).

 

In the meantime, so I can get back up and running, I think I'll try to reroute my fans to the LED PWM.  How exactly did you do that?

 

Thanks.

Share this post


Link to post
Share on other sites

Just replaced the board with a spare I had sitting around, and the Fan PWM on that board was working fine, although one of my fans wouldn't start up until I hit 255 PWM.  Weird, since I bought a new set of the exact same fan from Amazon.  Any clue what's going on with that?

 

Unfortunately, there's another problem: the 24V J19 output (next to the power supply) is busted.  It reads 0V, so my always-on fan won't work.  Is there another spot on the board I can grab a constant 24V from?  Or would it be possible (sorry, not an EE) to use the GPIO outputs to do that when the temp is above 50C or something?  My Prusa does something similar to that.

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

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 23 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!