Question about Projection Televisions

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Distorted picture When powered up picture is distorted with horizontal jagged lines over complete screen. Picture improves after runnig for a while but fault is still there.

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  • peter355 Jan 31, 2009

    Picture fuzzy. The outline of all characters are jagged and the jagged lines are running up the screen.

  • peter355 Jan 31, 2009

    does anyone know if this is design weekness with this model as the same fault happened two years ago.Is there a module which maybe Toshiba have modified since original release?

  • peter355 Feb 01, 2009

    The picture quality is worsening daily.How do I identify which module may be at fault so that I can remove and get it tested ?

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Do a hard reset, chances are this will take care of it.

HARD RESET: Unplug the power cord for 4 hours; then restart the tv.

If the reset does not cure the problem, I suspect there is a power supply problem. The culprit is likely to be one of the electrolytic capacitors in the power supply which has the purpose of filtering the ripple voltages from the bridge rectifier.

If the capacitor is the culprit, they are not expensive to replace but must be done by a tv tech - unless you are technical and know how to troubleshoot and solder

Posted on Feb 04, 2009

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Remove the wires from the TV. The yellow usually works for the screen and picture. There could be dust or debris in hole or on the male part of the wire. Get an air blower, clean it out. NO WATER!! Put it back it in, with the TV on. Adjust til' no more lines.

Posted on Feb 04, 2009

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It looks like a convergence problem, you need to test and eventually replace the convergence ICs.

Here is a general How To: Fixing Convergence problems in RPTV's


Posted on Feb 02, 2009

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Your TV has a convergence board problem which is very common with these types of TV's even with the other brands. The fix for this is by replacing two identical IC's with part# that starts with STK. For your TV

Posted on Feb 02, 2009

  • Nate Stansfield
    Nate Stansfield Feb 02, 2009

    the part# is STK392-110 but most technicians including me replace these
    with STK392-150 for higher wattage rating and reliability. And before
    replacing these IC's technicians check small components called
    resistors and pico fuses. They also check for loose or cold solder
    connections.

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Hi!

Check for the cables at the back of your tuner and your tv. See for the feature of Progressive scan on your tv menu, turn it on and it will lessen the effect or also can completly remove it.

Posted on Jan 31, 2009

  • Rylee Smith
    Rylee Smith Jan 31, 2009

    If it doesn't help then your scaler/deinterlacer inside has gone bad and needs to be replaced.



    Thanks

    Rylee

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Adjust the horiz. hold/sync.

Posted on Jan 31, 2009

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It needs minor repairs on the board.u will have to check the board with a meter first to identify the faulty junction.

Posted on Jan 31, 2009

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Hello
am not understand what the probleme
but if you have garente you can go at the place who you buy it
because that a technic probleme

Posted on Jan 30, 2009

  • mohamed boyzid
    mohamed boyzid Jan 31, 2009

    hello
    i am sorry but i like the sulotion
    if you have garante you go in the company whish you buying this tv

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OK, this sounds like the rgb calibration module may be going out. try calibrating your tv. this starts off slow but eventually, it gets worse. you may have to place an order for this part so you can replcae it. its quite easy to get to.

Posted on Jan 30, 2009

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This is caused by the convergence circuit board, it can be repaired if u are very good at electroics repair.

Posted on Jan 30, 2009

  • yadayada
    yadayada Jan 31, 2009

    this is caused by the convergence circuit board, it can be repaired if u are very good at electroics repair.

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It soundslike a couple of the ICs have gone bad you might want to call in a repairman to have a look at the set

Posted on Jan 30, 2009

  • Ronnie Houston Jan 31, 2009

    toahiba is always trying to update or modify so its harder to find the parts you need sometimes to fix the previous models.they havent had any recent recalls on tvs and the models they are coming out with now are even harder to work on than they were 5 years ago.this was why i suggested to you that you have a repairman come out to look at it.people on here arent able to keep up with any of the major updates that each model has come out with and the tv repaimen are required to keep up to date .

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Capaciters on the main board are bad and will need replaced1

Posted on Jan 30, 2009

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PICTURE HAS DISTORTED HORIZONTAL LINE IN CENTER OF SCREEN.


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.

Convergence problems are very common on all Projection TV sets including Sony, Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

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Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a solution

93a1209.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

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Picture Problems: Snow, color, lines


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

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

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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No Blue. Horizontal Lines.


Not to me, but it also depends on if you could do this yourself or not. And the area you are in sometimes is responsible for the cost being high.

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