There is severe hum or noise.

  • Move the system away from sources of noise.

  • Connect the system to a different wall outlet.

  • Install a noise filter (not supplied) to the AC power cord (mains lead).

  • Turn off surrounding electrical equipment.

  • The noise generated by the cooling fans of the system may be heard when the system is turned on. This is not a malfunction.

  • Move the system away from the neon signs or fluorescent light.