Question about Vizio L32 32 in. LCD HDTV

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While the tv is operating it will lose signal for a few seconds and then come back on also there is a black line running vertically on each side of screen about 3 inches wide while operating

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The three inch black line is there because your signal is being broadcast as regular definition. Many TV stations and shows are still not being taped in high definition, so they are setup to display in the old aspect ratio. Aspect ratio is basically the width versus height of the display or TV. This is expressed as a ratio, so it will show up as 16:9, 4:3, or some other number ratio. It doesn't mean that your TV is 16" tall by 9" wide, just that it's some multiple of that.

Non HD broadcasts were almost always in the 4:3 ratio, but HDTV is in the 16:9 ratio. This means that if you put a regular definition picture on an HDTV like your Vizio, there is space left at the side, or that you would have to cut off the top and bottom of the picture. Since we don't want to lose the top and bottom, HDTV's are setup to leave the space at the sides. This space is the black band you see on the sides of your TV.

The picture going away for a few seconds is either a weak signal, or interference. Digital TV is different from analog TV in that it's either all there, or it's not. Analog TV would go from a perfect picture to a picture with static, ghosts (or double images), and lines running through the picture. This was because the analog signal could run the complete range from one level to another. In digital, the signal is a series of ones or zeros. The TV then translates that back to the picture you see on your screen. In simple terms, since it sending ones or zeros, if part of the signal is too weak, there is a gap or missing part of the picture. There isn't any static, but if your on the edge of the TV coverage area, sometimes the signal is so weak that it isn't good enough, and there are gaps.

There isn't anythying you can do about the black edges, but you can try a signal amplifier to help out with the times when you lose signal. You can buy an amplifier at Radio Shack or even at Walmart. It doesn't need to be "digital", and if you had an old amplifier it would most likely work fine.

Posted on Oct 08, 2009

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