Question about Mitsubishi WT-42311 42" Rear Projection Television

5 Answers

Toshiba picture I have adjusted convergence but still picture is blured. What can be done to get clear picture. Triprenu

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  • triprenu Aug 16, 2008

    I have tried all the tricks through the remote, finally have opened the tv and adjusted the focus with the help of service manuel but still picture is blured.

  • triprenu Aug 16, 2008

    Hi there,
    would you be able to suggest the probable capacitors or ICs to look for. There are many, but wich to look more carefully.

  • triprenu Aug 16, 2008

    Toshiba 51WH36P, Picture is continuasly vibrating and blured. which capacitor I do need to check. your help is highly appreciated.

  • triprenu Aug 17, 2008

    Thanks guys for your advices, unfortunately nothing worked and finaly TV has stoped forever.

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Check if there is any lamp vibration.

Posted on Aug 17, 2008

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Try checking this is from the link posted by Voodoomox it has the step to solve your concern..

We had to re-solder the circuit board that contains the STK392-570 convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. All we really needed for equipment was some liquid flux, solder, cleaner, heat sink paste (to correctly bond the modules to the heat sink), solder pen & a phillips screwdriver.
We were able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This would give us the hour glass effect on the picture and the advanced convergence screen. This was an indication that the modules pins weren't solidly connected (meaning soldered) properly. We removed the circuit board and the solder job was indeed weak. We cleaned the old solder off & resoldered the modules pins to the circuit board reconnected the board and then retested by again pushing on the heat sink. No distortion. We pushed harder than the original test but couldn't cause the hour glass effect.
This is a case of a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs.
We took the appropriate cautions working around the high voltage of the set & used a non-conduting piece of wood to push the heat sink when we did our tests. Overall, this wasn't too difficult of a job but I wouldn't undertake this if you have little or no experience working w/ electronics & particularly circuit boards

Hope that helps..........

Posted on Aug 16, 2008

  • Mark Gil
    Mark Gil Aug 17, 2008

    Sorry for that , I think its time for you to get a new television now..

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Please check on the links below, if your tv displays blurred characters as much as the picture below.

Toshiba picture - db94fab.jpg
here is the link:

http://forum.ecoustics.com/bbs/messages/2/278833.html

it says...

re-solder the circuit board that contains the STK392-570 convergence modules. They're on the center circuit board attached to an aluminum heat sink that's about 8" long and 6" tall, about dead center in the circuit board. All we really needed for equipment was some liquid flux, solder, cleaner, heat sink paste (to correctly bond the modules to the heat sink), solder pen & a phillips screwdriver. We were able to recreate the problem (hour glass effect) by gently moving the heat sink (which the modules are connected to). This would give us the hour glass effect on the picture and the advanced convergence screen. This was an indication that the modules pins weren't solidly connected (meaning soldered) properly. We removed the circuit board and the solder job was indeed weak. We cleaned the old solder off & resoldered the modules pins to the circuit board reconnected the board and then retested by again pushing on the heat sink. No distortion. We pushed harder than the original test but couldn't cause the hour glass effect. This is a case of a minimum effort (a.k.a. minimum cost) solder job, probably done in some 3rd world sweat shop. The "factory" job was good enough for 3-4 years but the heat (and these modules do create a lot of heat) and stress created from repeated use eventually takes it's toll, weakens the pin connections and our problem occurs. We took the appropriate cautions working around the high voltage of the set & used a non-conduting piece of wood to push the heat sink when we did our tests. Overall, this wasn't too difficult of a job but I wouldn't undertake this if you have little or no experience working w/ electronics & particularly circuit boards.

the pictures in the link will gice you an idea on what part you will need to check on specifically the capacitors

hope this helps, best of luck to you.

Posted on Aug 16, 2008

  • marlon john madrid
    marlon john madrid Aug 17, 2008

    well if that is the case then best bid is to get the tv to a repair shop to get it fixed, my apologies to what happened to the unit, hope you get it running though.

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Clean the screen,go to this website for instructions
http://www.techlore.com/article/10066/How-to-Clean-Your-TV-Screen/

Posted on Aug 16, 2008

  • ritchie dempacco
    ritchie dempacco Aug 16, 2008

    use a multimeter to check all,or just call a tech that's just a suggestion

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Using the remote try to adjust the brightness on the TV Menu

Posted on Aug 16, 2008

  • Michael Galve
    Michael Galve Aug 16, 2008

    You can see the instructions on the manual that came with it. If you don't have the manual, you can get it here

    http://www.user-manuals.com/shopping_car...


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2 Answers

My picture is doubled on my toshiba TN50V71 as if there is a shadow behind everything? Please help!


hi, sounds like a convergence issue. try this...
  • Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.

  • Enter the menu on your TV. Use the remote control and bring up the menu.
  • Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."
  • Select a color. You will have red, green and blue to choose from. Do each one, starting with red.
  • Press "Enter." A crosshair pattern will appear on your screen.
  • Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.
  • Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.
  • Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.
  • Repeat these steps for all colors.
    good luck!
  • Feb 02, 2011 | Toshiba TN50V71 50" Rear Projection...

    1 Answer

    After various boards and repairs, I still have problem with my picture, my TV wont take the convergence adjustments done manually and the auto convergence display an error message. TV man says the...


    If you mean it will no longer store the settings, replace the X2402 8 pin EEporm. They are only a few pennies to buy and that will save you a fortune.

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    My Toshiba 50H82 television takes about 30 minutes to clear up and during that process, it shakes.It becomes clear but still has wavy lines at the top of the screen which is about 6 inches.


    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
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    *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
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    *Halos around objects
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    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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    Cannot get the set to focus. Colors are blured


    Sounds like a convergence misalignment, go into the tv menu and look for other adjustments sub menu and follow the on screen directions,this is a simple procedure but will take a little time to get it adjusted just right. Directions are also on pages 20 and 21 in your owners manual. Good luck!

    Nov 26, 2009 | Panasonic PT-47WX49 47" Rear Projection...

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    Picture is multi color, double shadows, curved


    This is failure of convergence out ICs in TV. Qualified TV tech will replace convergence out ICs or board.

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    Picture off center on Toshiba 46" rear projection HDTV


    On some models there is a picture position setting. One for horizontal and one for vertical. Don't mess with convergence, that probably won't help. Older models use knobs; new ones use the menu. Either way, you are looking for position adjustment.

    Older sets, for each there should be size, hold, and position. Same for menus but it may have a picture that looks like one square offset on top of another.

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    Ken

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    Convergence for toshiba 50h82


    Either mode is fine...just save your session when done!

    Projection sets have two very common problems.

    The first common problem is 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
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    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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    Good luck.

    Sep 06, 2008 | Toshiba 43H71 43" Rear Projection...

    1 Answer

    Distorted Picture


    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....
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    • 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.

    49abec3.jpg
    f0add3d.jpg


    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.
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    hi we had this problem and called an engineer out all he did was take the bottom front off and cleaned the bulbs this sorted the problem out was told it is a comon foult with them colecting dust on the bulbs

    Apr 01, 2008 | Televison & Video

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