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First off... what are you watching on TV, Demanda? :)
1)
Unplug the TV for at least 5 minutes. Sometimes discharging all of the components solves problems like this.
2)
Check your cables
Replace the cable going from your sat / cable receiver to your tv. Unplug EVERYTHING else from the TV and give it a try. If the color is still there, see problems 3 or 4.
3)
It could be the light engine starting to fail.
http://www.google.ca/search?q=Light+Engine+Fail
4)
The logic board (motherboard / whatever) may be starting to fail. This is sometimes caused by static electricity, manufacturer defect, moisture, cigarette smoke, etc.
http://www.fixya.com/support/t531343-red_bar_green_bar_left_side_vizio_plasma
Problems like this rarely end well. I'm not a fan of extended warranties... but when I bought my big screen TV, I purchased the 4 year super-extended plan and called my credit card company to ensure that I had a strong warranty. I've heard and seen a few problems like this.
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http://www.blogcdn.com/www.engadget.com/media/2007/06/dell_vertical_lines.jpg
If you are fortunate, it may be associated with an internal card becoming partially unseated. This is my best guess, since it disappears when the television "warms-up". Since materials expand when heated, that would suggest that there is an internal connection that moves slightly when expanding to correct the problem. I have seen this in computers with the video card. Simply removing the card (you can also use this as an opportunity to clean the connector edge with a good pencil eraser) and replacing it can help resolve the problem.
Depending upon the design of the components, you may not be able to easily access the inside of the television. This is where you need a good techie friend who has the right tools and experience to do the job for you.
It MAY be the panel itself. If that is the case, you are out of luck. It will eventually die.
From the sources...
Vertical banding is usually used to describe specifically the vertical banding issues on LCD displays. It's caused by a difficulty in controlling the vertically controlled arrays of LCD pixels and keeping them all at the same voltages. It will vary from display to display, and is usually most visible on green, which causes itself to be seen on smooth images especially skies and the like.
Note that these will be vertical kinds of faint stripes in the image across the screen. Other banding / contouring problems can appear on any display and in other directions because of bit-depth problems. Many LCDs have other contouring / banding problems besides VB.
Source(s):
http://en.wikipedia.org/wiki/LCD
http://www.hometheaterforum.com/htf/audio-video-sources/264570-explanation-...
My experience as an electrical engineer (Hail Purdue!)
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Answered Question
M$2
May 13, 2009 12:08 AM
What's wrong with my TV? (pic inside)
It is a 46" Vizio. Almost every time it is turned on, the colors are distorted for about 5 minutes, and then it returns to normal. It looks like this:
http://i43.tinypic.com/2b4h1w.jpg
It seems like anything black on the screen becomes green stripes. Why is this happening, and is it a sign of a bigger problem to come?
Right now, it's only a minor annoyance, but I'm worried it will get worse.
It seems like anything black on the screen becomes green stripes. Why is this happening, and is it a sign of a bigger problem to come?
Right now, it's only a minor annoyance, but I'm worried it will get worse.
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Best Answer Chosen by Asker
| May 13, 2009 12:35 AM |
1)
Unplug the TV for at least 5 minutes. Sometimes discharging all of the components solves problems like this.
2)
Check your cables
Replace the cable going from your sat / cable receiver to your tv. Unplug EVERYTHING else from the TV and give it a try. If the color is still there, see problems 3 or 4.
3)
It could be the light engine starting to fail.
http://www.google.ca/search?q=Light+Engine+Fail
4)
The logic board (motherboard / whatever) may be starting to fail. This is sometimes caused by static electricity, manufacturer defect, moisture, cigarette smoke, etc.
http://www.fixya.com/support/t531343-red_bar_green_bar_left_side_vizio_plasma
Problems like this rarely end well. I'm not a fan of extended warranties... but when I bought my big screen TV, I purchased the 4 year super-extended plan and called my credit card company to ensure that I had a strong warranty. I've heard and seen a few problems like this.
| Asker's Rating: |
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Helpful: morriss003, demanda, nadiraziz, irishstephen1974
Tip robbrown for this answer
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Other Answers (1)
May 13, 2009 03:42 AM
This problem appears to be what is known as vertical banding; an issue not all that uncommon with LCD panels, but normally associated with low(er) quality brands. If you are fortunate, it may be associated with an internal card becoming partially unseated. This is my best guess, since it disappears when the television "warms-up". Since materials expand when heated, that would suggest that there is an internal connection that moves slightly when expanding to correct the problem. I have seen this in computers with the video card. Simply removing the card (you can also use this as an opportunity to clean the connector edge with a good pencil eraser) and replacing it can help resolve the problem.
Depending upon the design of the components, you may not be able to easily access the inside of the television. This is where you need a good techie friend who has the right tools and experience to do the job for you.
It MAY be the panel itself. If that is the case, you are out of luck. It will eventually die.
From the sources...
Vertical banding is usually used to describe specifically the vertical banding issues on LCD displays. It's caused by a difficulty in controlling the vertically controlled arrays of LCD pixels and keeping them all at the same voltages. It will vary from display to display, and is usually most visible on green, which causes itself to be seen on smooth images especially skies and the like.
Note that these will be vertical kinds of faint stripes in the image across the screen. Other banding / contouring problems can appear on any display and in other directions because of bit-depth problems. Many LCDs have other contouring / banding problems besides VB.
Source(s):
http://en.wikipedia.org/wiki/LCD
http://www.hometheaterforum.com/htf/audio-video-sources/264570-explanation-...
My experience as an electrical engineer (Hail Purdue!)
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May 13, 2009 03:59 AM
The lines are actually horizontal, and they only appear on black parts of the image.
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May 13, 2009 04:06 AM
In your image, I see a black band at the top and bottom of the screen (in a horizontal direction) and a green band near the left side (in a vertical direction). Not knowing your source resolution, I assumed that the black horizontal bands are supposed to be there and the green vertical band is not supposed to be there.
The green band is actually there across the entire screen (even the white or other color parts), it is just easier to see where the colors are black.
Based on my experience, I would venture to say that my answer still applies whether the stripes are vertical or horizontal.
Good luck!
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The green band is actually there across the entire screen (even the white or other color parts), it is just easier to see where the colors are black.
Based on my experience, I would venture to say that my answer still applies whether the stripes are vertical or horizontal.
Good luck!
May 13, 2009 01:56 PM
Yeah, I think that together, Yagelski's advice and mine is sound.
The result is the same, Demanda...
It's likely either a cable problem or a problem inside of the TV.
After you've checked the cables...
Is your TV still under warranty?
Did you buy it less then 30 days ago? If so, return it.
Does your credit card have purchase protection on it? Call them first.
How long is the manufacturers warranty? Have you called them?
This is on the extreme shady side of retail... but most stores don't check serial numbers. So, if you can find the exact same television in stock somewhere, you could buy the new one.... unpack it in the parking lot... pack up the old one... and return it. Again... this is shaaaaady... however, the TV will be returned to the manufacturer and in the end, problems like this aren't your fault... but rather cheap manufacturing processes and hardware.
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The result is the same, Demanda...
It's likely either a cable problem or a problem inside of the TV.
After you've checked the cables...
Is your TV still under warranty?
Did you buy it less then 30 days ago? If so, return it.
Does your credit card have purchase protection on it? Call them first.
How long is the manufacturers warranty? Have you called them?
This is on the extreme shady side of retail... but most stores don't check serial numbers. So, if you can find the exact same television in stock somewhere, you could buy the new one.... unpack it in the parking lot... pack up the old one... and return it. Again... this is shaaaaady... however, the TV will be returned to the manufacturer and in the end, problems like this aren't your fault... but rather cheap manufacturing processes and hardware.
May 13, 2009 03:17 PM
No warranty...it's about 6 months old. I am thinking now it may be an issue with the satellite hook-up. I'm going to forward this page to my hubby and have him investigate.
Report
May 13, 2009 05:01 PM
It's "possible" that the satellite receiver has a defective video output. Does the banding occur when viewing DVDs or other video sources? If so, it's not a satellite receiver issue.
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