This may be a stupid question, but are you viewing a program in a widescreen format? Check your Blue Ray disk setup options and see if there are any formating options or if it is widescreen only for the disk that you are using.
When I play a Blu-ray I have black bars top & bottom. I tried both 16:9 and Just Scan, same result. I thought I had it when I found I could adjust the picture under the Just Scan mode (thinking I could stretch the picture like a computer monitor, although the result of doing that may have been disappointing) but no luck. Is this the way it should be? If so, I'm disappointed that I have about 25% of this big beautiful screen going to waste. Make no mistake, the picture is awesome. I did go through the setup on the Blu-ray player, but no difference there either. Thanks in advance.