Rare behaviour with Nav+TV+resler
 

Here I am again...

Rare situation: I have nav, tv... etc. I get from the tv module two connectors, for video, and the mono audio.

The issue is that the AV channel only works with my laptop, when I connect the resler usb too.

I also tested the connection with two photo cameras. One... no signal, the other, only works if I touch the cables (but not the connectors, just the shield).


Any explanation?

Thanks and regards,
Manu.

The AV-IN shield (ground) inputs are isolated from the car chassis.

When you are using a DVD plaer powered by the vehicle, the DVD player is connected to the chassis of the car and everything works fine

If using a separate iPod or video player which is a portable device, then you will need a ground connection.

BMW design it this way to prevent ground loops which cause video interference.

If you only use portable video devices that will not have a permenent ground conenection, then you may want to connect the AV-IN shield to ground inside the TV module white plug.

Thanks Jochen, :thumbup:

Much appreciated!
Manu.