I have a similar issue with a Jokerz, but my speach works fine and I have no music at all. I did everything you have done and I have swapped out all of the caps, the op amps, TDA2002, etc., etc. Still no music.
A fellow pinsider contacted Coin-Op Caudron and they said they would look at the board, but only if it has no prior work done, which is very understandable since they have no idea the quality of the work and they have to warranty their work. They also stated that they are swamped with board work and you could expect three months at least before getting work done.
Anyone have any help with trouble-shooting these boards? What area and components of the board drives the music?