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Hi Everyone - i've just bought a 2010 Astra SRi. Comes with a CD400 main unit, with the nav screen

The screen does not work at all - no display or lights at all.
The controls on the main stereo do not work at all 
The steering wheel controls do work though and i get sound through the speakers.

I have no idea if it came from the factory with the Nav Screen or if previous owner has tried to upgrade and it's not been done correctly.

Any advice on where to start looking? 

Cheers for your help
Hi, the cd400 never came as a Navi unit. what you have there is an OEM looking unit most likely an android unit.

I would first start by taking it out and making sure all the plugs are plugged in correctly.
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I suggested on another forum that the OP could have one of the Win CE units similar to the ones fitted by Car Vision (Drive Audio), who've recently gone into liquidation.

Same as you though, IIRC correctly I mentioned to check the wiring.

Not heard anything back yet.

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