One of our AD2's stopped working while being powered through USB, the PC doesn't detect the USB device at all. I suspect something went wrong with the PC's USB ports (we've had other issues with other equipment in the past). It didn't work as well on another setup on which I also use an AD2, so I imagine something in the power supply fried, although no component look damaged. The LED does not turn on. I checked these two threads which seemed relevant:
The ferrites seem OK, as well as the connections (cf 1st thread). I checked the tensions from the FTDI chip (cf 2nd): VCCA and VCORE are OK at +1.8 V, however VPHY, VPLL, and VCCD are all at +5.0 V instead of +3.3 V. I suspect there is an issue with the built-in regulator in the FTDI chip.
Would replacing the FTDI chip fix the issue, or could another component be damaged?
Question
aket
Hello,
One of our AD2's stopped working while being powered through USB, the PC doesn't detect the USB device at all. I suspect something went wrong with the PC's USB ports (we've had other issues with other equipment in the past). It didn't work as well on another setup on which I also use an AD2, so I imagine something in the power supply fried, although no component look damaged. The LED does not turn on. I checked these two threads which seemed relevant:
The ferrites seem OK, as well as the connections (cf 1st thread). I checked the tensions from the FTDI chip (cf 2nd): VCCA and VCORE are OK at +1.8 V, however VPHY, VPLL, and VCCD are all at +5.0 V instead of +3.3 V. I suspect there is an issue with the built-in regulator in the FTDI chip.
Would replacing the FTDI chip fix the issue, or could another component be damaged?
Thanks! :)
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