Duet not connect in anyways - Clue: nozzle fan always on

[dc42]

@genioluiz7 if the Erase jumper was definitely not in place when you ran Bossa, then sadly I think the flash memory of the main processor on the Duet as been damaged. The only other possibility I can think of is that the 3.3V rail is low, perhaps because something powered by it is drawing excessive current. If you have a multimeter, you could measure the voltage between the 3.3V and ground pins of one of the endstop connectors.

[genioluiz7]

Hi @dc42 thanks for your suggestion, I really appreciate and sorry for the delay in my reponse.
I check the tension between 3.3V and GND pins of an endstop and the tension is correct, 3.34V. What you think?

[dc42]

@genioluiz7 yes, that voltage is within tolerance. One last check: if you click the About button in Bossa, what version does it report? It should be 1.9.1.

[genioluiz7]

@dc42 yes, It's that, 1.9.1

[genioluiz7]

@dc42 What could I do now?

[droftarts]

@genioluiz7 It looks like replacing the MCU is the only option now. We do stock refurbished boards at discounted prices, if you need a cheap replacement. Email sales@duet3d.com.

Ian

[genioluiz7]

@droftarts Hi, thanks for that info.
I wrote to the sales dep. and they suggested me the v1.05. I want to ask you an info about the v1.05, is there a way to add a resistor for the heated chamber?

[droftarts]

@genioluiz7 said in Duet not connect in anyways - Clue: nozzle fan always on:

I want to ask you an info about the v1.05, is there a way to add a resistor for the heated chamber?

Do you mean a Duet 2 WiFi v1.05? It should be a drop in replacement for your current board. I'm not sure I understand what you mean by "add a resistor for the heated chamber". Do you mean a thermistor, ie temperature sensor? I think you still have one spare temperature input on your Duet. See https://docs.duet3d.com/en/User_manual/Connecting_hardware/Heaters_chamber

Ian