Jump to content
UltiMaker Community of 3D Printing Experts

fan control burned out?


joergen
 Share

Recommended Posts

Posted · fan control burned out?

I did a mistake while updating the fan shroud around the print head:

I installed a new fan, and accidentally reversed the polarity, and it fried itself with smoke.

Then I went back to the original fan, only to discover that the fan control didn't work anymore, and the fan always runs when the board is powered up (could be worse).

Did I just fry the BD679 (darlington transistor)? is the BD679 actually driving the cooling fan (I would assume it does), or did I fry more than the transistor?

advice?

joergen

  • Link to post
    Share on other sites

    Posted · fan control burned out?

    Fans have most times a small pcb, and a SMD control chip, which in my case went up in smoke... no smoke from the main board... just looking for confirmation if the BD679 is doing the fan control or not...

  • Link to post
    Share on other sites

    Posted · fan control burned out?
    Fans have most times a small pcb, and a SMD control chip, which in my case went up in smoke... no smoke from the main board... just looking for confirmation if the BD679 is doing the fan control or not...
    The PCB on those fans does the PWM, which is not very wise, as it does the same as the PWM on the UM board.

    The BD679 is turning the fan on/off. So if it's always on then it's most likely fried.

    It could be that the output of the Arduino is fried, easy to test, turn on the board without the Arduino connected. If the fan turns on, the BD679 is fried.

  • Link to post
    Share on other sites

    Posted · fan control burned out?
    The BD679 is turning the fan on/off. So if it's always on then it's most likely fried.

    It could be that the output of the Arduino is fried, easy to test, turn on the board without the Arduino connected. If the fan turns on, the BD679 is fried.

    It's fried, thanks for confirming... now I need to find a new one.

  • Link to post
    Share on other sites

    Posted · fan control burned out?

     

    http://reichelt.de/

    sells them for 29 cents, which is cheaper then Farnell. They also have affordable nuts&bolts, and loads of other stuff.

  • Link to post
    Share on other sites

    Posted · fan control burned out?
    http://reichelt.de/ sells them for 29 cents, which is cheaper then Farnell. They also have affordable nuts&bolts, and loads of other stuff.

    They are in Germany/Europe, I'm in the US/NYC... I'll find a local supplier...

  • 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
     Share

    • Our picks

      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 14 replies
    ×
    ×
    • Create New...