I recently bought a new Samsung TV, the LN46C630. I noticed that when I used it with my XBOX 360 Elite (older, about 3 or so years old) connected through HDMI, I got some slight flickering. After hours of testing with different inputs and different TVs - I finally figured out this:
It only happens when my XBOX's HDMI is set to RGB mode, and the HDMI Black Level option on my TV is set to low. However, I don't have another HDMI output with an RGB mode. I'm trying to figure out, is it my XBOX's RGB mode that's messed up? Or is it my TV's Black Level option that's messed up? I have only a few days to return the TV, so I'm trying to figure out the best way to make a conclusion about this. Thanks in advance.
On my display setting the HDMI Color Space to Auto causes the picture to be slightly washed out and sort of "soft" looking. Choosing 709 causes the blacks to be deeper, the colors to be more vibrant, and the image to be sharper. I prefer 709, but admittedly haven't played with the settings much.
Sony XBR-65A1E | Denon X6300H | Klipsch RF-7ii (x2), RC-64ii, RB-51ii (x4) | SVS PB12-Plus | Xbox One S | WDTV Live | Sony BDP-S6200 | Harmony 670