Right side of screen is dimmer then Left Half

Right side of screen is dimmer then Left Half

I just bought this Vizio M Series like back in January, and I noticed that the right half is dimmer then the left. I thought I was crazy or sitting at the wrong angle until my neighbor noticed. How can this be? It’s brand new…. Is there anyway to adjust the brightness of the right side? All I can find is an adjustment for the WHOLE screen not one side…

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