Koss KSC75 Driver Replacement

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Inspect all soldered connections to make sure the wires are firmly attached and not touching other components.
Gently tug the wire to test its strength. If it comes loose, re-solder it.
A good solder joint should be smooth and secure. If rough or cracked, reheat and add solder. Lead-free solder may appear dull instead of shiny—this is normal. Focus on a strong connection.

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