Digital audio problems
Try using a different cable for starters, regular rca, another optical or coaxial.
If the optical works, then its a cable problem.
If the coaxial works(and another optical doesnt), then its a cable/jack problem.
If the RCA works(and the rest don't), then its a problem with the digital output.
Try blowing into the holes, and if nothing works and you can't find any other advice, contact Pioneer.
Good luck
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