[chill14]

Hi i'm new to the forum. I don't currently have an Audi myself although I am looking for one. I do however need your help with one.

Any ideas on this would be great as i'm stumped.

My neighbour has an A3 1.6 petrol which I believe is on a 2001 plate (instrument panel has defaulted back to May 2001), in which the standard Concert 1 Radio has stopped working. I mean completely.

He had some work done on car two or three weeks back and the battery was removed. It was put back on and the headunit stated 'SAFE' which was correct. He has had difficulty entering the code decided to leave it alone until he checked manual.

Anyway he knocked our door today for help as he is now worried because the unit now doesn't come on at all.

My brother and I have had a look and checked the fuses as per the card on the fuse cover but all seem ok.
We pulled out headunit and were slightly shocked at the amount of wiring there but could see anyhting obvious as to why it wasn't working. I noticed the missing 'switched live' cable but I have since read this is correct. (Something about it uses the control module instead of a live feed to the unit to tell it to come on.)

We then removed the Headunit and plugged it in a VW Polo where the headunit powers up fine ans is saying 'Safe'. Plugged it back in the Audi and still nothing.

I got my voltmeter out and tested voltages on the wiring loom and everything seems fine, there is 12v (the permanent live) and on the one marked S connect but the radio will still not power up.

My Brother has run Vag-com on the car and it is not detecting the radio or the conveince module so I am assuming there is a power problem somewhere but I don't know where else to look to find the power issue or the module.

VagCom is reporting repeated faults with the Central locking (although it works), is this related to the radio issue?