Jan Mrázek

@attila: Do you have any more suggestions? My AD2 was used for measuring battery-powered low-power sensors, so I hope I couldn't damage it by wrongly connecting it (especially when it has differential scope inputs). Is there some kind of diagnosis procedure I could follow?

I tried it on ThinkaPad T480, Macbook Pro, Macbook Air, desktop computer with Asus motherboard. I even tried powered USB hub. On all of these devices, this unit worked reliably until a few days ago when occasional fault happened.

Hello, I've been using Analog Discovery 2 happily for a few months. However, today my AD2 started to have an unreliable connection to my computer. The device was often not detected by Waveforms, or it couldn't be programmed, or it reported insufficient power requirements. I have tried several USB cables, and I even used external power, and the device still fails to connect. I attach several error messages I saw during. Could you help me troubleshoot the problem? From the significant power draw it reports, I suspect some IC might be broken and it draws too much power from the power rails.