ST-Link V3 Not Detected, Only a Faint Red LED - Is it Dead?

[biopunk101]

Hi everyone, I'm having an issue with a brand new ST-Link V3 and would appreciate a quick sanity check before I return it.

Here's the situation:

* The device is not detected by my PC at all (it does not appear in Device Manager).

* I have already confirmed my USB-C data cable is working correctly.

* The red power LED on the ST-Link is extremely faint and dim.

* I also tested it on a second computer, and the result was exactly the same.

Since the LED is so dim and it fails on multiple PCs, I'm confident this is a hardware fault (DOA). Has anyone seen this specific issue before? I've attached a photo of the dim LED.

Thanks for any input!

[Imen.D]

Hello @biopunk101 ,

Please check this article: FAQ: Possible communication failure between STLINK-V3 and some recent computers

[S C]

Hello,

If the problem occurs from out of the box, I agree it is most probably either an hardware issue, or a wrong programming of the board; so I suggest to ask for an exchange. Before this, may you please have a look in the device manager (if you are on Windows), in "Universal Serial Bus Devices", if you see "STM32 ST-LINK/V3", or any failing device ? (in this last case, it could be helpful the check, in the device details, the USB vendorId (ST=0x0483), and USB productId)

May you please also precise the data on the sticker of the probe (something like LKV3SET$xxx and a serial number with 1 letter and 9 digits), so that I forward to the industrialization team for analysis.

Thank you and sorry for this trouble