Question about Mitsubishi WT-46809 46" Rear Projection Television

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Is this a convergence amplifier problem on my Mitsubishi projection CRT? (w/ picture)

Hello,
I have a picture of the screen here: http://www.austinthirdgen.org/gallery/d/9551-2/TVconvergence.jpg

The TV allows only blue and red adjustments, not green. So I can't adjust this.
Is this a problem with the convergence amplifier circuits?

Thank you very much in advance.
Lou

Posted by on

  • BigBabyLou Jan 31, 2008

    This TV belongs to my in-laws. The TV has not moved in years. All of a sudden, they said the picture looked "funny". I displayed the alignment grid and that's what it looked like (in the picture).

    Thank you very much.
    Lou

  • BigBabyLou Feb 06, 2008

    As I originally suspected based on the symptoms (and other posts on this website), the convergence amplifiers were bad. So after 20 minutes, the TV is back up and running.
    A simple Yes/No answer would have helped a little more.
    Thanks for trying.
    Lou

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.. could you please state the occurence? is it after you have tryed to adjust something? or is it the was moved several times?

Posted on Jan 31, 2008

  • clark  daylan
    clark daylan Feb 02, 2008

    ..hi again.. the funny thing about troubleshooting is that sometimes we dig deep enough aiming to resolve what we should.



    if your unit was set for how many years now it might be a cold solder connections mainly in its printed circuit board in convergence and focusing circuitry. speaking of picture alignment likely in color are greatly affected by magnetic fields generated from focusing rings and or coils thus these coils could loose power to produce the necessary field. also if you can find the RGB color rays pls do check that all three is running fine. hav a nice day for you..

  • clark  daylan
    clark daylan Feb 02, 2008

    ..also pls not try adjust internal settings from trimmers, coils and the like just try to look for cold solder first.. good luck..

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

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Picture of a set that needs the fluid changed.

578ba6c.jpg
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65af323.jpg

69189a5.pngSOLUTION

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