I had a same problem with it . i have nissan primera 1.2 2002 model.
But now imy problem is gone.
What i did,
1st: disconnect the battery for 5 minutes. & then reattached it.
2nd: opened whole front of dvd, cd & satnav. including whole control panel.
3rd: ditchadded all the connection from the panel & also taken off all wires of dvd, satnav & cd.
4th: I have not taken or move the screen.
5th: after that I have reattched all the cables back & fixed the unit & I have decided that I will go to bye the whole new system.
6th: & finally, when i started my car, the whole system was working in good manner. I wasmuch surprised.
If you have a real proble, then it's worth triying this thing. I got my banifit.
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