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    Duet 3 DCS not start, no 3.3v led, board Ok??

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    • Chanabraundefined
      Chanabra @Chanabra
      last edited by

      @chanabra RPi4 fully booted up cannot start DCS... Time out

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      • Chanabraundefined
        Chanabra @Phaedrux
        last edited by

        @phaedrux In any case there is no green LED for 3.3V ever

        I have also now just tried on my Linux laptop and there is no /dev/ttyACM[number]

        I am about to try the erase options....
        please, please, advise.

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        • Phaedruxundefined
          Phaedrux Moderator
          last edited by

          Yes you can try the firmware erase jumper on the Duet 3 to clear any firmware and make it programmable. Use Bossa to flash firmware 3.3 on it.
          https://duet3d.dozuki.com/Wiki/Getting_Started_With_Duet_3#Section_To_update_via_USB_using_a_Windows_host

          Z-Bot CoreXY Build | Thingiverse Profile

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          • Chanabraundefined
            Chanabra @Phaedrux
            last edited by

            @phaedrux I decided to take thing from the beginning as I purchased the board from Tim and was advised not to miss any points and be more articulated.

            The RPi4 4gb connected with USBC power and HDMI out to monitor and a usb keyboard/mouse and ethernet works just fine.

            Duet 3 in standalone mode connected to a computer with a USB cable , (I also have a 60W PD Portable Charger I used to supply my laptop power simultaneously after trying on a full charge, as well as tried different micro usb cables) and no SD card yields the following LED: USB red LED between micro usb female port and microSD slot as well as 5V. No 3.3V. No matter what 3.3V is nowhere.

            Following your what to do if your Duet won't respond get's me to: If the red LEDs are lit but not the green 3.3V LED then most likely there is a short between the 3.3V power rail and ground.

            However, I am at the stage where I simply have a Meanwell 24V PSU hooked up to VIN and do no get 3.3V.

            Attached are pictures of this:

            1. Connected to Laptop, only the 2 red LED 5V and USB LED.
            2. Connected to Laptop w/ Portable Charger adequate enough to charge laptop, only 2 red LED 5V and USB LED.
            3. Duet 3 6HC only connected with + / - 24V Meanwell PSU
            4. Clear shot of Duet 3 6HC with the same configuration as 3 just a straight shot of the board.

            Also I attempted the erase jumper multiple times as per the link provided "What to do if your duet wont respond" and I cannot get it to have more than the 2 LED: 5V AND USB and it shows as surfaceucmucsihidient regardless of my appropriating the correct driver to it.
            On Linux there is no /dev/ttyACM[number]

            I believe there is a problem with the voltage regulator providing the 3.3V the board needs.

            I am going to reply to this post with my cell phone to make it easy to post the pictures .

            Please let me know if I missed any of your steps or where I should go and what I should do from here - I need to make sure i follow procedure.

            Thanks for your time Duet team and wise contributors.

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            • Chanabraundefined
              Chanabra @Phaedrux
              last edited by Chanabra

              @Phaedrux 20210828_060922.jpg 20210828_061011.jpg 20210828_061317.jpg

              Jk about picture 4. File too large and is very redundant as you can see the board in picture 3.
              I await further instructions..

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              • Phaedruxundefined
                Phaedrux Moderator
                last edited by

                Thanks for the granular testing. It's much clearer.

                Can you get a few well lit close up photos of the board? Maybe a few photos showing the 4 quadrants?

                If the 3.3v regulator is damaged/failed it may be covered under warranty. When and where did you purchase the duet?

                Z-Bot CoreXY Build | Thingiverse Profile

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                • Chanabraundefined
                  Chanabra @Phaedrux
                  last edited by

                  @phaedrux yes of course

                  Here you go. It may be worth mentioning I have a bench power supply and could, per instruction only, attempt to supply the board with 3.3V directly if that is a thing. The board was purchased through Filastruder and I have only good things to say about their service.
                  20210829_131409.jpg
                  20210829_131546.jpg
                  20210829_131550.jpg
                  20210829_131553.jpg

                  Chanabraundefined 1 Reply Last reply Reply Quote 0
                  • Chanabraundefined
                    Chanabra @Chanabra
                    last edited by

                    @Phaedrux the board from filastruder was their order#70861 placed on May 15.
                    I've been slowly finishing my printer and getting parts together and apologize its just now I am noticing and addressing this..

                    Thank you again for your time and assistance

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                    • Chanabraundefined
                      Chanabra @Phaedrux
                      last edited by

                      @phaedrux if you want a close up of something in particular let me know.Screenshot_20210829-134350_Gallery.jpg

                      Phaedruxundefined 1 Reply Last reply Reply Quote 0
                      • Phaedruxundefined
                        Phaedrux Moderator @Chanabra
                        last edited by

                        @chanabra said in Duet 3 DCS not start, no 3.3v led, board Ok??:

                        if you want a close up of something in particular let me know.

                        The large chip between the SD card socket and the reset button please. Does it look damaged?

                        Z-Bot CoreXY Build | Thingiverse Profile

                        Chanabraundefined 1 Reply Last reply Reply Quote 0
                        • Chanabraundefined
                          Chanabra @Phaedrux
                          last edited by

                          @phaedrux Screenshot_20210829-192829_Gallery.jpg

                          It does not but what do I know.

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                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by

                            I think there is a scorch mark right above the 3.

                            Please send an email to warranty@duet3d.com and CC your reseller. Include a link to this forum thread and the details of your original purchase. You'll receive a reply with a form to fill out.

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • Chanabraundefined
                              Chanabra @Phaedrux
                              last edited by Chanabra

                              @phaedrux email sent .

                              Here is another shot with a bit of zoom.20200611070609.JPG

                              I am not sure what I was looking for and looked beyond that mark initially because things like the 'Pin 1: Indent' threw me off.

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