While viewing a BlueRay Disc today the brightness dropped all of a sudden. It lost 25%-50% of it's brightness. At first I thought it was my BlueRay Player, so I switched to my PS3 input and noticed the same loss. Increasing the brightness in the TV's menu doesn't do anything, it's seems to be stuck at this level. Unsure if there's anything I can do to fix it without sending it back on the warranty. I bought it 1 week ago.