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A quick look at the schematic I think you have two seperate problems. You may need to change the chroma module, and the audio module. The only module that affects both is the secondary control module. You need to verify the power to each of these modules first. Volume, tone, color, and tint controls are on the secondary control module. Check the connections to this module. Power from these is not from the flyback. It comes from the 30 volt power supply, but this also provides power for a lot of the modules so I doubt there is a problem there.
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