AD2 not detected - Unknown USB Device

[lindnerlars]

He guys, 

the same here, I have two AD2 devices, the first one stopped working a week ago and is not recognized by my Windows10 machine (see attached image). With the same machine, cable, software etc. the second AD2 is detected perfectly. 

I post this question as it is mentioned by JColvin to be able to start a RMA request:

 

Thanks everybody and with best wishes,

Lars

 

 

 

 

 

 

 

[attila]

Hi @lindnerlars

If the AD2 is detected as "unknown device device descriptor request failed" instead "USB Serial Converter" indicates cable contact problem or damaged USB controller.
Due to wear and tear, a cable may work with one device but not with another.
Please try a different cable, port, hub, computer.
If it still doesn't work, the device is probably damaged.

[lindnerlars]

He Attila, thank you very much for your quick answer. 

I have already used different cables, different USB ports and two different Windows 10 machines, but the result is the same. 🙄

 

 

 

 

 

[attila]

Hi @lindnerlars

The onboard ferrites could be damaged by short circuit, like connecting external supply to device GND/supplies, or the USB controller damaged by high USB voltage or short circuit.
If the device is out of warranty, here you can find troubleshooting/repair instructions:

 

[lindnerlars]

Hello attila, thank you for your answer.

Unfortunately I don't have much time for debugging or troubleshooting, I would like to open an RMA.

 

Thank you and with best wishes, 

Lars Lindner

 

Edited September 25 by lindnerlars

[attila]

For warranty and replacement contact the support.digilent @ ni.com specifying the Date of Purchase, Seller and Purchase Order/ Web order Number.