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Band of light at top and bottom of brand new LCD TV screen

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5 Suggested Answers

  • 80 Answers

SOURCE: Red band at the top of tv screen?

Your optical block is going bad. Contact sony support. They will sometimes warranty these even after the 1yr warrany has expired.

Posted on May 21, 2009

  • 8 Answers

SOURCE: Blue Bands on sides of Zenith Projection TV D60WLCD

Go to the Zenith repair site. This has been resolved in a lawsuit. Zenith will fix it free of charge through 7/1/2010. The shop just picked my up to replace the light engine free of charge. Call 1-800-228-1757, have your model number and serial number, and where you purchased it. Here's the neat thing-the question I asked is "have they fixed the problem with the light engine, or is it going to keep going bad?" If happens again (blue lines/spots) before 7/1/2010, they'll replace the TV with a new and different TV of equal value!

Posted on Aug 02, 2009

  • 94 Answers

SOURCE: Brownish band across top of screen

Please press the WIDE button on the remote repeatedly to remote the Bands. If the issue persists, you may need to change the Aspect ratio to 4:3 on the Video source that you have connected to the TV. Check the link for more info:
http://www.kb.sony.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=C308757&sliceId=1&docTypeID=DT_KNOWLEDGEARTICLES_1_1&dialogID=130649210&stateId=0%200%20130647809

Posted on Sep 22, 2009

SD Tech
  • 14553 Answers

SOURCE: we have a Sony wide screen projection tv model

It sounds like a convergence problem--If you go into the customer menu and select convergence--if colors are bowed and or will not adjust:

The two STK-392-560 CONVERGENCE IC's that this set uses need to be replaced--their location numbers are IC8001 & IC8002.

They are located on two metal heat sinks with fins--and are black in color--2 1/2 inches wide by 1 1/2 inches tall and will have the full STK number printed on them in white.

Usually just both chips need to be replaced but there are some special fuses and resistors that protect them. A pair of the chips can be purchased on Ebay for about 12 dollars plus shipping.

The chips fail because a white grease to transfer heat from the metal back of each chip to the heat sink dries out and one or both overheat and fail.

If you or someone you know can do this repair you can save the set and a lot of money---most shops are going to get 300 or more for this type of repair.

These sets are dependable and other than this do not have many serious problems.

If you get someone to do the repair make sure BOTH chips are replaced or you will have the same problem again in a few months---lifespan of these parts is 5-8 years.

Let me know if you have questions or need advice--I am here to help people.

If this information helped you, rate this solution as I do this here for free.

SD TECH

Posted on Nov 06, 2009

Ecollier2012
  • 3459 Answers

SOURCE: my tv has a color

TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Jan 28, 2011

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My new lg 3d tv is closng on top bottom and sides is there anything i can do to cure the problem


Could you provide more information? What do you mean when you say, "closing?" Do you mean there is a black band around the picture? If so that means the original picture is recorded at a lower pixel density than your TV will display.
In the past most TV program signals provided a picture dimensions (in computer standards) very roughly 600 pixels wide by 400 pixels tall. What this means is that a picture of that pixel size will display as a small, squarish image slightly wider than it is tall on a (now) standard 1080p LCD television--which produces an image 1920 pixels wide by 1080 pixels high.
That would be nearly unwatchable (picture too small) except for the fact that most TVs compensate for the relatively small size of "standard definition TV (SD TV, as opposed to HDTV) by enlarging the image so that the top and bottom edges of the picture touch the top and bottom of the TV screen. This will leave black bands on either side of the picture. Some LCD TVs will automatically stretch BOTH dimensions of the image, which yields a distorted, "sqaushed" image.
All my comments above apply to both standard LCD and 3D-LCD TVs, by the way.
A more precise overview of the facts about TV picture size can be found here:
http://en.wikipedia.org/wiki/Display_resolution

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http://www.mitsubishi-tv.com/support.html
click warranties...
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