i have pulled the lead off the changer and waited but not off the head unit, the radio works fine i have code in audio book , dont think changer broke as i had the same problem when i brought it from ford garage as i have said as i off work wed thurs will give it a go.one of my mates at work is going to lend me his tester to see if any power is coming down the loom. update about cd changer finaly got around to doing it this week so unconncted it start of week left it off and connected this afternoon and bingo all working by looks of it, seems both units are back in love together :)