Join Date: Oct 2006
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It's not likely to be the display.
See the other posts here but you can get the symptom you describe if the UCC (the dash mounted control) is not operational.
If all else fails I've see that unit sell for £55 and a complete Sat Nav (including display) for £250 on e-bay.
Can I ask why you do not think it is the display itself that is the problem?
Is there any way of telling if the UCC is working or not without having the display on?
Currently in DPBWK1's garage:
2002 Renault Laguna II 2.0IDE