Star Wars Trilogy Arcade Audio Issues

Detail88

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Having trouble with my Sega Star Wars Trilogy Arcade. It's the non-dx sit down and I assume it's an issue with the dsb2 board as BGM will not play and in test it will play 1 second of the music and stop for every song. Any ideas on if this is fixable? The rest of the audio seems fine and swapping the mixing board inputs doesn't seem to do anything as the main audio still plays.
 
90% of the DSB are bad due to corrosion damage. I would verify pcb is actually bad and attack corrosion if so. There is also too high of 5v damage but this will kill GALs and knock out pcb so I am leaning towards corrosion issues with this one.
 
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