"E-mark cable reader" bricked device

risulee

I chose the "E-mark cable reader" tool to see the wattage of the cables attached. This is the first time I used that tool. The screen went black.

Now when I insert a power cable, the backlight lights up for a fraction of a second and goes black again.

I'm not sure if I misunderstand the manual or the device is faulty.

Is there a way to unbrick this device or did I destroy it?

risulee

I figured it out.

The cable was connected to a PD power source, and somehow that doesn't work. After connecting the cable to a non-PD source, the E-mark tool starts normally so I can exit the tool.

StatiC

The manual for the CT-3 states that you should not plug the other end of the cable into anything to get the e-mark data.  They also recommend to power the unit from the PC port (can plug it into a power bank and not a PC of course for power).

https://www.avhzy.com/wp-content ... Meter-UI-Manual.pdf