Thanks for your reply. Maybe I should be more specific and tell you more. I did try the test mode before and the center speaker does work. I have some DVD'S of my own that play fine. God figure ?
This problem seems to have started in maybe the last 4 or 5 DVD'S that I rented and one that I just purchased. I took the one I purchased to a friends and it ran fine.
Any chance the DVD player may be causing this problem ? It's a Panasonic DVD-F85. The first page of the DVD manual tells about how it can run RAM , DVD-A, DVDV etc.