Question about Toshiba 46H83 46" Rear Projection HDTV-Ready Television

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Convergence, the red color is slooping.

Toshiba 46H83 46in Rear
What does convergence look like. We don't have a manual or a remote that came with TV.

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If you remove the back of the set, you will want to look for the BIGGEST heatsink in there, on that heatsink, you will see 2 lage IC's , probably STK392-110, or STK392-120's or something close...regardless - you can go on ebay to order the new ones, but MAKE SURE they are Genuine SANYO IC's and not counterfiet cheapies. the cheap ones may only last 2 months..
You will also need some "Heat transfer paste" - you can pick this up at radio shack.
Once you remove the old IC's, test all the large resistors near them.. pull one side of the resistor out of the board so you can check it out of circuit. they will usually have the value in Ohms, printed directly on the resistor, but you may have to use the resistor color code to find out what value they are....However, usually if there is any damage, the resistor will look like it has been HOT or fried. replace the IC's and any bad resistors, and you should be good to go.
If after replacing the IC's and any defective resistors, the convergence is still bad, make sure to use a multimeter to check ALL fuses on the boards, --- sometimes when the IC's go, they will take out a fuse to the convergence power supply. If you find any bad fuses, replace them accordingly!
Hope that helps!

Posted on Dec 21, 2008

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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

    Focus error 50h81 toshiba red line problem


    Tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows or have 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts must be replaced on the tv convergence board to fix it.To solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

    Jan 01, 2011 | Toshiba 50H81 50" Rear Projection...

    1 Answer

    I just moved my 42in. Toshiba rear projectiom Tv from my basement to the upstairs and now my convergence is off. The red tube cross is low on the manual adjustment and will not go up to the other colors.IT...


    It sounds like you jostled the red CRT gun when you moved the set. If the convergence adjustment still moves the red cross hair the the circuitry is okay. Your red gun needs to be realigned. This requires a service call unless you want to attempt it yourself. It is fairly involved and requires some specific tools as well as using the service mode on the remote to reset the convergence after the gun is repositioned.

    Dec 06, 2009 | Toshiba 53H71 53 in. Rear Projection...

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    Trying to manually fix color convergence on Toshiba 57H81


    The convergence ICs and the six 1.8 ohm 1watt resistors need to be replaced. You can get the convergence repair kit for your model at www.tvrepairworld.com which has the Two Convergence ICs and the six resistors plus the CD with instructions on how to do the repair.

    Dec 02, 2009 | Toshiba 57H81 57" Rear Projection...

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    Toshiba Rear Projection TV picture color is now a greenish hue


    Hi, I used to work in Best Buy and one of the key things about rear projection TVs and the reason they push those service plans on you is that the tubes/colors need to be calibrated each year. You can do this yourself by checking out the following website:  

    http://lgknowledgebase.com/kb/index.php?View=entry&EntryID=3229 

    If you are not able to adjust the convergence using the remote you will need to replace the convergence chips. 

    Typical Symptoms

    1) Convergence menu does not work for one or more colors.  
    Such as: Red moves up,down, but left or right fails. 

    2) Screen is bowed looking.

    If you have one or more of the problems above you need to replace the convergence chips. You can get a kit and instructions from www.TvRepairKits.com  

    Hope this helps :) 

    Sep 12, 2009 | Toshiba 50H82 50" Rear Projection...

    1 Answer

    Samsung Rear 42 in Projection TV Calibration problem


    Hi, if you are not able to adjust the convergence using the remote you will need to replace the convergence chips. 
    Typical Symptoms

    1) Convergence menu does not work for one or more colors.  
    Such as: Red moves up,down, but left or right fails. 

    2) Screen is bowed looking.

    If you have one or more of the problems above you need to replace the convergence chips. You can get a kit and instructions from www.TvRepairKits.com  

    Hope this helps :) 

    Jun 16, 2009 | Toshiba 62HMX84 62" Rear Projection HDTV

    1 Answer

    Color convergence messed up


    you can get the convergence repair kit for your model that has both convergence IC and the six feed resistors at this link, The repair kit also has step by step instructions with pictures so you can do the repair your self. Heres the link.The 50H82 kit is the same for the 57H82, http://servicemanuals.vstore.ca/product_info.php/pName/toshiba-50h71--50h81-convergence-repair-kit/cName/convergence-repair-kits

    Feb 01, 2009 | Toshiba 57H81 57" Rear Projection...

    1 Answer

    Old toshiba proj. t.v. red color bowed and not aligned


    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 projeciton 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 photos of convergence problems.

    42d3683.jpg

    7859b01.jpg

    e87380c.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. And you should be able to get the grid straight.

    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 fix

    69189a5.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 are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

    Jan 04, 2009 | Toshiba TP50H50 50" Rear Projection...

    1 Answer

    Projection lights


    You need to take the Toshiba remote that came with the machine and go into a menu area that deals with convergence. Here's what the manual says:

    This TV used 3 separate TV tubes, red, green, and blue. The R, G, and B images are pojected onto the screen wheree they converge to form a full-color picture. You can see a clear picture only when the three images converge correctly. Corvergence my drift over time, or if yo move the TV. I you can see clear images on your TV screen skip this procedure.

    Make this adjustment only after the TV as been on for at least 30 minutes.

    Press the TOUCH FOCUS (auto convergence) button on the front of the TV at the bottom.
    The TV will enter into the convergence mode and adjust the converge automatically (that's what it says.)

    TO ADJUST IT MANUALLY:

    Press MENU, and the press < or > until the PICTURE menu appears.
    Then press UP or DOWN to highlight CONVERGENCE.
    Press < or > to display the Center Convergence menu

    There's a lot more the book says, but, I can say from experience that you just go through the different sub areas of this menu and converge each color separately, and bingo, it's fixed.

    Good luck.

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

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