Pioneer VSX520 Receiver "adjusting pictures yellow" Questions

have got sound through all devices plugged in however no picture. Using video cable (Yellow) and red/ white audio. Have got yellow plugged in monitor out.... your video source (cable box or Blu-ray or

...yellow, white combination) from the back of the STB, YEY!!! peace!!! This did not interfere with the picture or audio quality. The humming noise could be just about anything. The most common is AC ...