Hi everyone,

As the title says the Sat Nav/Radio/Comp screen has gone blank. Power to the unit and buttons 'do' things and the radio works.

I have tried disconnecting everything in the audio cubby hole cleaning connectors and checking for water ingress, I have had some water in there before and a 'shedder' is fitted. Light and whirring from the Sat Nav so that has power.

I have tried powering up with everything disconnected in the back in the hope I would get some sort of default display on the head unit but nothing,

I have disconnected the battery, done an overnight charge and reconnected with a steering wheel reset but no display. I have also checked the 30A main audio fuse in the glovebox.

So before I take the likely next step and have the head unit out and fit one from a breakers (look to be about £170 on ebay) I wondered if anyone could suggest any further tests?

Thanks Knips.

Mine went like that, it was moisture getting into the sat nav unit. When i took the top off the sat nav unit it was all rusty on the circuit board, had to buy another unit of the bay of fleas.  gone fishin'

Make sure the blue and white connectors on the TVs module are sound if the above doesn't work. If I remember right it's just the blue one. I got one working by easing it up and down whilst live and watching the screen.....

Worth a try. it's daisy chained with the sat Nav.... 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport

Thanks both for your suggestions!

Ok I am just going to update this thread and close it.

I replaced the display unit and guess what - no display - so back to the back of the car.

I removed both the TV module and the Sat-Nav from their mountings so I could see clearly and carefully check the connector sockets and plugs. I cleaned the socket pins and on close inspection pin 1 of the TV tuner socket was corroded through.

Pin 1 & 10 is the TV module power connection (see the following pinout diagram). Power should also come in through 2 & 9 but on dismantling the blue plug it was clear that pins 2 & 9 were not connected so the break on pin 1 meant no power to the TV.

Click image to enlarge

Well done.. cheap fix as well... presuming you can sell the screen you bought..... Pete
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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
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