Unresponsive board, DIAG lit, next steps?

unstableTable

Hello all,

I have a Duet 2 WiFi V1.04 (no erase button), unknown firmware on an Ender 3 [V1] Pro.
It ran great until I moved and tried to connect to a new wireless network.

I followed:
https://duet3d.dozuki.com/Wiki/What_to_do_if_your_Duet_won't_respond#Section_Check_the_voltage_indication_LEDs

I tried to connect via YAT under USB power only. No luck.
I checked Device Manager on two Windows laptops and the board did not appear anywhere
I found/followed the above link
The lights on board were: 5v, 3.3v, & red light b/t rest button and USB. The DIAG light lit up ~0.5sec then remained off
I jumpered the erase pins (no erase button), applied USB power (few sec, per the link) then removed USB power & jumper
I applied USB power lights are same, plus DIAG light now remains on
USB inserted I checked Device Manager and got "device descriptor request failed" (code 43)
Board still unresponsive, I even tried with/out SD card inserted. I bought through Filastruder two years ago so I am likely outside my warranty.

How can I save her?
Thanks! *smiles in noob

jay_s_uk

@unstabletable try a few different USB cables. Also try a powered USB hub if you have one

unstableTable

@jay_s_uk Hey Hey! The USB hub solved it! A new BOSSA COM port open in YAT.
Continue in YAT as per usual set up for a new wireless network?

jay_s_uk

@unstabletable yep. that should get you going

dc42

@unstabletable said in Unresponsive board, DIAG lit, next steps?:

@jay_s_uk Hey Hey! The USB hub solved it! A new BOSSA COM port open in YAT.
Continue in YAT as per usual set up for a new wireless network?

You will need to flash the firmware using Bossa. After that, you can use YAT to set up the network.

Phaedrux

https://duet3d.dozuki.com/Wiki/Installing_and_Updating_Firmware#Section_Fallback_procedure_Num_2

unstableTable

@dc42 got it thank you