I actually removed the PSU and cleaned the connectors during the speaker fix. When I use the RCA connectors I get full stereo, but when I switch to JAMMA connector sound it's mono left. Where does the Blast City split mono audio to left and right? Does it happen on the JAMMA loom or in the PSU?
And to be clear you are switching the connector on the 001 loom? There's a physical connector switch to go from stereo (RCA) to mono (JAMMA). But yes it should be dual mono, not playing out of one side.
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