Well, after years of trying to buy a decent, working one, I finally bit the bullet and took my lovely condition but non-working Beogram CD50 to Tim Jarman and I have to say, what a guy! I also took him a friend's Sony Walkman Pro WM6DC and I have never known anyone else who, when confronted with a blown and non-availalbe DC to DC convertor, splits it open and replaces the surface mount components inside...
His knowledge of B&O is almost scary and his collection of equipment is incredibly impressive. Needless to say, my CD50 is now playing happily and i have the complete Beosystem 5000 singing merrily in the dining room.
Tim, if you read this - thankyou again!
Adam.
P.S. - Nearly forgot - thankyou, Peter for putting me in touch with him!