I have an Advent flat screen tv. It has a blue screen with a black layer under it. The blue level covers the screen entirely. The problem is that, out of the blue, the blue is shrinking away in an uneven hourglass shape, exposing the black. It is the same for any mode of operation. The picture shows fine, but with the black on top, kinda like it was letterboxed, but weird. What causes this? Is it fixable? What gives really?
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