I just wanted to piggy back on you and say I'm experiencing the same thing. I hope someone out there can help us out!
Hello! I just got the Samsung UN46C6300. I've been tweaking the picture settings only to find that no matter what I choose, when I turn it off and turn it on again, it is reset to the default settings.
Also, at times, when watching a cable, a DVD or something from a laptop via HDMI, the tv will reset to default settings.
Is this a defective TV? Or am I Missing something in the settings? Thanks!

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