I just purchased a pioneer dv-667a recently and noticed that when using coaxial digital out that there is always a 2-3second delay before the audio starts

ie video starts and 3 seconds of silence before the audio comes on

occurs on the following functions like movie start, next track chapter selection, pause, fast foward and rewind.

only happens when using the digital out, if I select analogue audio out then everything is fine.

why is that? My previous players never had this.