It was I, who made this video, trying to explain the problem to airnav before sending the box back in order to be fixed.
Silviogo, it’s not about ground, the female jack of my box is problematic. It has to be pulled up a little in order to work. I just emulate this, putting a little object under the jack and then pushing with my finger on the box.
I received the box damaged from the beginning. I was so disappointed and I decided to open it and see if the connection of the jack was ok. It seemed to me that everything was fine and close the box back and asked for airnav support. I sent my box to them (35 euros), and they told me because the box was already opened, I had to pay 100 euros. I refused (because I had not touch anything inside), and they sent it back to me ,unfixed.(By the way, thanx Airnav for the great support ;)
Chris, the box was on the pc just for making the video (greetings by the way ;)
Yiannis