Duet 2 Wifi doesn't turn on when connected to 24v psu

[Braeden]

I just finished building the BLV mgn Cube with the Fysetc kit. After I wired up everything, I turned on the printer. The psu turned on and the LED VIN lit up on the board but the touchscreen never came on. Now after a couple days of tinkering I have realized that the board does not receive 3.3v or 5v UNLESS I plug it into my computer via usb. When the psu is turned on and the board is connected via USB, I can heat the bed but it will not heat the extruder and it will not move anything, giving me the error that "attempt to move motors when vin is not in range" when I try to home the X axis. I don't really know where to go from here.

Duet2Wifi running 3.3 Firmware

[alankilian]

@braeden Can you send some photos of the wiring on your board and power supply?

When you have it all powered-up can you measure the voltage at the VIN connectors when only powered by the PSU?

[Braeden]

@alankilian Sure! I apologize for the mess, it's pre-cable-management. I haven't connected the bltouch yet so that should be the only thing that isn't plugged up in the pictures.
I measured from the psu side and the input side of the board and both show 24V.

[rjenkinsgb]

You do not appear to have a jumper on either the external or internal 5V power select points?

See the pumper positions just above the power in / bed fuse area, as you have the board.

Connection drawing here, the 5V jumper notes are to the extreme right on this:
https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams

[Braeden]

@rjenkinsgb I placed jumpers on the EXT 5V and the INT 5V and on the VIN pin and V_Fan pin of the V Fan 3 pin and I'm getting the same results.

[alankilian]

@braeden You should go through the instructions on how to configure your board.

Don't put on both internal 5V and external 5V jumpers.

[Phaedrux]

Can you get a close up clear photo of the board? Do you notice any components getting hot? Do you notice any damaged chips?
Can you try disconnecting the majority of the wiring leaving only vin, do the 5v and 3v leds light up?

[Braeden]

@alankilian Okay that makes sense. I disconnected those and left the one jumper on the INT 5v and I'm receiving the same result.

[Braeden]

@phaedrux Absolutely! I unplugged everything besides the vin and the 2 wires from the relay. Nothing appears to be damaged or hot.

[alankilian]

@braeden I don't see any of the LEDs lit.

Try unplugging the USB and those two extra wires and just supply 24 Volts to VIN and see if any LEDs light up.

[Braeden]

@alankilian So it’s powered on and everything is unplugged besides the vin

[alankilian]

@braeden Do you have a voltmeter?

Connect one meter load to ground at Vin and:

• Check both sides of the 2 Amp fuse and see if you have 24 Volts on each side.
• Check both sides of C97 or C99. You should see 0V on one side and 5 Volts on the other

[Braeden]

This post is deleted!

[Braeden]

@alankilian I received 24v on the 2 amp fuse but unfortunately I received 0v on both sides of c97 and c99

[dc42]

@braeden it's a clone Duet so that green LED is actually the VIN LED.

Looks like either the 5V_INT jumper isn't fitted (although it looks fitted in your photo), or the 5V regulator isn't working, or something is shorting 5V to ground.

[Braeden]

@dc42 Is there anything I can do to fix it?

[alankilian]

@braeden Wiggle the 5 Volt jumper or try removing it and shorting the two pins with a paperclip to see if your jumper is bad (unlikely)

Other than that, you can work through this schematic and see what's wrong with the 5 Volt power supply.

Or you can just add a 5 Volt power supply to your system and insert the 5 Volt as an external supply and move on to printing!

[Braeden]

@alankilian I’ll take a closer look and see what I can figure out when I get back home! Thank you! I was just thinking about adding an external 5v to see if that would get it working.

[Braeden]

@alankilian Alrighty so I got everything wired back up with the jumper on the ext 5v pins and I have 5v being supplied externally with a step down converter however when I try to home the X axis I get the same error “Attempt to move motors when VIN is not in range” as if it were still plugged into a USB port and also the E0 heater is not heating.

[Phaedrux]

@braeden said in Duet 2 Wifi doesn't turn on when connected to 24v psu:

“Attempt to move motors when VIN is not in range” as if it were still plugged into a USB port and also the E0 heater is not heating.

Is the VIN LED illuminated?