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  #1  
Old 07-03-2008, 01:25 PM
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Join Date: May 2008
Location: Valencia, Spain
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Manu M3 is on a distinguished road
Question 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.
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  #2  
Old 07-03-2008, 03:09 PM
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Join Date: Dec 2006
Location: Switzerland
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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.
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  #3  
Old 07-04-2008, 03:04 AM
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Join Date: May 2008
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Thanks Jochen,

Much appreciated!
Manu.
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