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Screen issues -- directv or vizio?

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Old 08-15-2010, 03:29 AM   #1
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Default Screen issues -- directv or vizio?

I have a Vizio 37" LCD (I think it's model 370VM) TV connected to a DirecTV HD DVR (HR-23-700). Almost daily, the TV is displaying jagged white lines across either the top or bottom of the screen (regardless of whether the content is HD or SD).

Vizio asserts that this issue is solely related to the DirecTV signal, but the problem does NOT exist when connecting other flat screen TVs.

I've been told the problem is related to "bit lines," which I believe pertain to extra data or other information transmitted by broadcasters but not always recognized by the TV, cable/satellite receiver or both.

The Vizio has vertical and horizontal settings, some of which eliminate the problem -- but only temporarily. The jagged lines immediately re-appear after changing the channel.

Anyone heard of this problem? Any Vizio users having this problem? Or those with other LCD brands? Any advice is appreciated.
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Old 08-15-2010, 04:58 AM   #2
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What you are seeing is a miss algined Display-which can be fixed, by adjusting the TV Screen (VIZIO) Look at your owners manual for screen placement for(adjustment) of display.

All New TV's have this option.

You will no longer see the bit lines when the tv display is centered.
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Old 08-15-2010, 12:29 PM   #3
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Thanks for the input. Pretty sure I tried the alignment/centering adjustments you mentioned. On the Vizio, they call this the "H Position" and "V" Position." Adjusting this did get rid of the lines. The problem is that the lines re-appeared when I changed channels, so this only seemed like a temporary (or channel-specific) fix.

Is this what you meant or am I missing something else?
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Old 08-15-2010, 04:29 PM   #4
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Quote:
Originally Posted by prmstr View Post
Thanks for the input. Pretty sure I tried the alignment/centering adjustments you mentioned. On the Vizio, they call this the "H Position" and "V" Position." Adjusting this did get rid of the lines. The problem is that the lines re-appeared when I changed channels, so this only seemed like a temporary (or channel-specific) fix.

Is this what you meant or am I missing something else?
That is what I ment-If the issue Changes when you change the channels the TV set is not remembering how it is set, Run this by VIZIO Tech Support.
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Old 08-17-2010, 08:53 AM   #5
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Quote:
Originally Posted by prmstr View Post
I have a Vizio 37" LCD (I think it's model 370VM) TV connected to a DirecTV HD DVR (HR-23-700). Almost daily, the TV is displaying jagged white lines across either the top or bottom of the screen (regardless of whether the content is HD or SD).

Vizio asserts that this issue is solely related to the DirecTV signal, but the problem does NOT exist when connecting other flat screen TVs.

I've been told the problem is related to "bit lines," which I believe pertain to extra data or other information transmitted by broadcasters but not always recognized by the TV, cable/satellite receiver or both.



The Vizio has vertical and horizontal settings, some of which eliminate the problem -- but only temporarily. The jagged lines immediately re-appear after changing the channel.

Anyone heard of this problem? Any Vizio users having this problem? Or those with other LCD brands? Any advice is appreciated.

Had the same problem with the 32" 1080P Vizio in my bedroom but only on the top of the screen. I got rid of it by changing to either "native" on or off don't remember which one at the moment and the problem was gone.
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Old 08-17-2010, 09:26 PM   #6
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It's Vizio (or more specifically, probably, a Vizio settings) problem. What you are seeing is the data in the interscan between successive frames of the TV signal. It's usually the closed caption data carried in the analog signal, which is why you won't see it on HD channels because the closed caption data is carried differently. Many TVs have the ability to select different display modes with different levels of overscan; the ideal setting for TV where the signal originates as an analog signal is about 4% overscan which pretty well guarantees you won't see this "noise". Display modes with names like "just scan", "pixel mode" or "full scan" are great for digitally-derived signals including DVD and computer-generated pictures but not so good for signals originally analog, which means pretty well all SD signals. There is lots of potential for timing errors in the analog signals causing the picture to be one or two lines of pixels displaced from the norm. Even some TV upconversion systems can cause this. Selecting a display mode that has slight overscan, or adjusting the picture center, compensates for this.
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