DFR1242

Hello,

I just received my board (DFR1242). I put my (working) Jetson Nano module on it, connected it to 12v. 

The red and green LEDs light up, but nothing happens — no signal on HDMI, the system doesn't boot up. 

Putting it back into my kit board makes everything work again, as before.

Any hint or suggestion? Might it be a faulty board?

Any help is very much welcome.