Street Fighter 2 Repair Logs
The Audio subsystem ROMs, main CPU ROMs, and the graphics ROMs showed normal signals on their pins. Pulling one of the program ROMs did not result in any music playing. Swapped the A board for a known good one and received the audio that was missing. The C board was bad (The custom Capcom chip was resoldered to rule out broken surface mount solder connections) and the A board had audio problems. Swapped the C board out from another SFII that had a bad ROM board. Game would now play but had no audio. Repaired 2 cut traces and replaced 8 caps in the audio section to fix the missing audio problem.
Game would not give anything on the screen.
Replaced a broken ferrite filter on the B board and tested. This one supplied the video clock to the C board.