I have a Sony TV, XR-55A, it is connected to my Sony BDV-N7200W Blu-ray Home Theatre System. I am getting a high pitched screem / whistle when I have the two on together, watching films, listening to music. It happens every few minutes for a few seconds even when I have the TV in Picture Off mode. I do not have any other electrical equipment hear them and they are seperated by about a meter. Can anyone help as it is most anoying?
