MULTI CHANNEL AV RECEIVERSTR-DH750/STR-DH550

There is severe humming or noise.

  • Check that the speakers and device are connected securely.
  • Check that the connecting cables are not near a transformer or motor, and are at least 3 meters (10 feet) away from a TV set or fluorescent light.
  • Move your audio device away from the TV.
  • The plugs and jacks are dirty. Wipe them with a cloth slightly moistened with alcohol.