I posted earlier about the sat nav in my 2006 Signum failing and this morning I took it into the local VX dealer for a check.
They tell me that the problem lies in the radio part of the system as the sat nav is fed through it and that it's not a repairable defect and that replacement is the only solution.
The cost, are you sitting down?, £3500.00, they priced the head unit and the display as separate items. This is about the current value of the car and is out of the question.
I asked the technician about buying a second hand unit and he indicated that there were some risks attached to that as the head unit and display unit are paired and both "married" to the car and that buying something off eBay for a few hundred pounds was risky. His final comment was that it would be more sensible to but a Tom Tom or a Garmin unit.
So, I'm looking for a spot of guidance from someone who has either changed, or knows how to change the CD70 unit. I get the impression off eBay sellers that it's one pair out and a matched pair in - it can't be that simple, can it??