I found the ROM chip for Charlies Angels, only problem is i cant say for sure its good though (the game was in pieces and half missing when i got it, but the MPU board was there and all in one piece) Im happy to send it to you to try out, it might just fix your game!!
PM me your name and postal address and i'll stick it in the post..
Cheers... Mitch
EDIT: does your sound board just not work or is it missing completely??? If its there and just not working they're dead simple (and cheap) to repair
I have a system 1 sound board (1st sound board, the "fart fart fart soundboard" as Tim Arnold calls them)
have one here but i need to test it and see if it works