<i>Hi - seeking advice how to get my 2001 SE 115PD CD unit going again (or replacement if its a lost cause)

Symptoms:

Week 1 - 6 CD VW multi changer in boot stopped working with 6 CDs in it. Radio head unit read 'No CD Changer' and no ejection functioning on 6x unit. <img border="0">Could not locate a fuse for it on unit or in the main dash fuses. Still, at least I had the single CD player working in the CD head unit!<img border="0">

Week 2 - CD head unit stopped working with CD in it Radio head unit read 'No CD Player' No fuse at the back of it and again no fuse in the dash located.<img border="0">

Visited VW dealer for MOT - they don't know fuse location but would take it in to investigate. I don't want to do this, particularly if they don't know what they are doing.

Question Any ideas what the problem might be / where the fuse is located?
If its not worth fixing, advice on an upgrade (scrapping the 3 separate units) - say a new integrated CD/Radio unit that will play mp3s and take a USB plug in?

Is there a VW blanking plate to go where the old CD player head unit, if I go for the latter option?

Grateful for any thoughts

Pete</i>