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LG Rear projection tv help... Red, Blue and Green horizntal line through screen.

Hi there,
I have had a LG RT-44NZ31RB rear projection tv for a about 3 years now and just today I turned it on and there is a red, green and blue line at the top of the screen running horizontally across the screen.

I was just wondering if this is something I can fix myself ie. Going into the service menu and adjusting a few parramaters or will i have to get a reapir person out to fix it?

Any help would be appreciated.

P.S I left a link of what it looks like
[URL=http://img299.imageshack.us/my.php?image=imgp0886cw2.jpg][IMG]http://img299.imageshack.us/img299/76/imgp0886cw2.th.jpg[/IMG][/URL]

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  • tracer007 Dec 29, 2007

    sorry this is the correct photo link
    http://img299.imageshack.us/my.php?image...

  • sundrops Jun 20, 2008

    Mine is an RCA. What did you eventually have to replace in order to have it work properly? This is only a 18 month old television...

  • Anonymous Mar 16, 2009

    mine is the same it looks like a sidewards hour glass my screen sucked in sat the top and bottom and have a green blue and red line running across the screen any help would be good. all i did was press auto con and this happened from then on

  • Anonymous May 16, 2009

    I have Vertical Solid Narrow Red Line appearing on left hand side of the screen on my Pioneer Elite PRO-710HD TV.

    Does anyone know if they is a problem in the Input/Output Board w/Jacks?

    If so, how is this fixed and can it be fixed by owner?

    Thanks!

    Lois LaPierre

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Red line across the top of my akai rear projection tv

Posted on Jan 03, 2010

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The complaint may be dry solderig or yoke ,horizontal or vertical oscilator

Posted on Dec 31, 2007

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Posted on Jan 02, 2017

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LG Projection TV Model# RT-49NA11T Green color gun shows bent arc on top & bottom.Red & blue guns are ok.How to adjust the green gun to remove the bent arc. This is causing picture shows mix...


This problems ur tv have can't not be fix by adjustment.The tv have a problems known as convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to repair the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

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Wavy horizntal lines


Projection TV sets have two very common problems listed below.

Problem #1) Convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou 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

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2 Answers

LG rear projection colours out of alignment


I have a similar problem with an LG (except my red is the one that is fine) and was able to talk to a tech in some detail about it. The tech prefaced by saying that he had done a hundred or so of these with exactly the same issue. This is very common and the life span of rear projection televisions is not great. Having said that, plasmas and LCDs are also limited in life span mostly due to modern high performance gaming machines which shorten the lifespan of monitors both plasma and LCD alike.

From what I have gathered, this is not a problem that you can easliy sort out. (Of course they would say that though) It involves replacing the digital board which means soldering followed by aligning the lamps which requires quote a lot of expertise.

The part itself apparently costs around $200 Australian and the labour will vary for the cost of the technician but I was quoted that the labour was about the same cost as the part.

Not sure if I would call this solved but I hope it has been at least a little helpful.


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Mitsubishi WT-42413 Blue Green and Red Line


there is a section in the tv working just to keep the screen fitting top to down (vertical section) some capacitors are dry now in that area. this one has not to be a expensive job in the workshop. Try estimates

Apr 14, 2009 | Mitsubishi WT-42413 42" Rear Projection...

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Sony 43 inch rear projection tv, I have lined up the convergence but still seeing red and green around edge of the tv on the images, seems fine in the middle of the screen though.


Always start at the vary center of the screen with Green. Position Red over Green, then Blue over what now will look yellow. If all is perfect except the outside, you will need to adjust "Mid-Size" until the middle is just as far off as the outside lines. Then adjust the main "Size" adustments to match. Go very slow or you can make a mess of it.

Mar 06, 2009 | Sony KP-51HW40 51" Rear Projection...

1 Answer

Lg rt 56nz23rb


Hi there.

Replace the stk convergence ics and also the 3.9 0hm fusible resistors.

Sep 20, 2008 | LG RU-52SZ51D 52" Rear Projection...

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I own a LG rear projection tv model number RT - 44NZ31RB and for some reason refuses to turn on. Worked fine and then all of a sudden stopped. Standby light comes on and then a small noise can be heard...


had the same problem as described, exactly. happend after 13 months of use.
I had the power suply replaced and it works perfectly since then.

Jun 30, 2008 | Televison & Video

1 Answer

LG rear projection colours out of alignment


This is all i could find when i did a search:
they have inherent problems with the glycol oil used to cool the tube leaking past the bladders & onto the boards.... & it's conductive :p

Dec 10, 2007 | Televison & Video

1 Answer

Red green and blue lines


Most projection TVs have an option to refocus. For example, my Sony rear projection TV has a button on the front for focusing the lamps. Try finding this button or option in the menus with your remote. Projection TVs actually use three lamps, one red, one green and one blue. These need to line up exactly in order to form a good picture, and when they come out of focus, you see the edges which sometimes has the effect of a 3D image when you aren't wearing 3D glasses. Hope this helps!

Sep 07, 2007 | Panasonic PT-53WX54 53" Rear Projection...

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