i bought an Euroshield from someone on eBay who says he has it bought as new and never had used it.
I connected my teensy 3.6 like in the manual. But whatever sketch I load up it doesen‘t work at all. No leds a blinking and so on. I’m very sure the teensy gets no power from Euroshield.
Surely I have testet the teensy itself Powering from other sources standalone. It works fine then. Further I checked the buspower of my rack. All working fine.

Can you help me? Any suggestions?

Many thanks