Upgrade Opportunity??



  • I am pretty sure I fried the driver for the fans on my Duet2 Wifi tonight.
    Right before starting a print I decided to run through a bed leveling compensation and the hotend fan kept going on and off and I immediately suspected a short.

    Sure enough, I discovered the solder was about to let go at the plug closest to the fan.
    With everything still on and running I wanted to touch the wire to the post on the plug just to double check the fan would come on and when I did I accidentally touched the other post and shorted the wire.
    I have heat shrink on both posts but there was enough showing that a strand of wire touched I guess. It actually startled me.
    It arced a little and I noticed that the cooling fan on the controller board stopped spinning and a second later I smelled that dreadful smell.

    You know.....that smell of burned money?

    I'm not getting power from any of the plugs for the fans on the board now. Toast.
    Everything else works as it should, though.

    So with that, 2 questions:
    Is it worth sending the board in for repair? I have had it 2 years and it has given me flawless service.

    If not, and I am forced to buy another should I upgrade to the new Duet 3 board or shall I stay where I am with the Duet 2?

    I have never used the v2 board to it's fullest potential. I only have 3 steppers. I have a corexy with 2 steppers on x/y and one on Z.
    I only have 3 fans. HE cooling, part cooling, and controller cooling.
    Would the v3 board be overkill?

    And I guess one more question....
    Any suggestions what I can use this old board for? I thought maybe I could use it for a laser cutter or something.

    Thanks in advance.



  • @Scottbg1 said in Upgrade Opportunity??:

    Is it worth sending the board in for repair?

    depends on the extent of the damage. if its just a fan mosfet it might be depending on your location there is https://forum.duet3d.com/topic/13875/community-repairs

    unless you need the flexibility that comes with the (for now unmature) duetsoftware framework that runs on the raspberry pi I'd say stick with the duet 2 if you're getting a new.

    edit:

    I'm not getting power from any of the plugs for the fans on the board now. Toast.

    You did check the fuse, if your board has one? (I.e. if the always on fans fail the fuse failed, or a trace acted like a fuse if your board doesn't have one)



  • I have the v1.02 board that does not have the blade fuses. I wish I had known to look for the version of the board when I bought it.
    I live in the US and I bought from a reseller here.
    I guess this board was sitting on the shelf for awhile. I bought this board the summer of 2018.
    If I read correctly the 1.03 was the latest and greatest by then.

    I will try checking with the distributor I bought it from tomorrow and see if they can do repairs.
    Unless @dc42 or someone chimes in to say it isn't worth it.



  • @Scottbg1 said in Upgrade Opportunity??:

    I have the v1.02 board that does not have the blade fuses.

    could add some pictures of the board around the fan headers. should be easy to spot if traces are bust or just the mosfets.

    if its only the fans that are bust then i'd say it still has some life in it.

    you could probably use some of the IO pins on the duex header to drive the fans through some external mosfets with no repairs.



  • If the only problem are the power mosfets, you can buy replacement mosfets for a few bucks and ask anybody with minimal soldering skill to replace them.

    Replacing stepper drivers is a different matter.


  • Moderator



  • I actually emailed Filastruder, the store I bought it from here in the US and asked if they recommended someone and they were able to put me in touch with someone who does their warranty work.
    I shipped the board off this morning.

    Thanks for all the responses.



  • That's a pretty smooth solution as well!

    If the 1.02 board has the voltage selection jumper you could create a short jumper wire with an in-line fuse holder to emulate the blade fuse of the 1.04. (Seems it does, J3)

    Just my $0.02



  • @Scottbg1 said in Upgrade Opportunity??:

    they were able to put me in touch with someone who does their warranty work...

    IIIRC, there is somewhere a list of people worldwide that are willing to repair Duet boards. Would be useful to add the contact info of that person as well.



  • @zapta said in Upgrade Opportunity??:

    @Scottbg1 said in Upgrade Opportunity??:

    they were able to put me in touch with someone who does their warranty work...

    IIIRC, there is somewhere a list of people worldwide that are willing to repair Duet boards. Would be useful to add the contact info of that person as well.

    He's on the list.


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