On the first day, the picture looked great; this TV was at least the equal of my last LCD TV that was twice the price. So, for a day I was pretty pleased with the purchase.
On the second day, the picture suddenly darkened, and then went completely black. When it did come back, it was still much dimmer than it had been before.
There were a lot of reviews on the Walmart website, and 155 of them gave this TV five stars. 19 of the reviews gave the TV one star, and warned of this exact problem. We rolled the dice, and were one of the approximately 10% that got a bad one.