Question about Toshiba 50HX81 50" Rear Projection Television

4 Answers

I have a Toshiba 50HX81

The color is off. There is double of every thing. How do I fix this problem

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  • dwcwlc May 23, 2008

    This does not address my problem

  • dwcwlc May 23, 2008

    My tv had a red curved line near the bottom of the picture and it is double. How do I fix it?

  • dwcwlc May 23, 2008

    What are the directions for cleaning the lense?

  • dwcwlc May 23, 2008

    How do you adjust the convergence cross bars? I can adjust numbers 1 4 6 & 9 but not 2 3 7 & 8 I can't get the colors to come together

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4 Answers

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I think this is a convergence problem

Posted on May 23, 2008

  • dewan nafees ahmed May 23, 2008

    If you don't
    have any repair experience my suggestions can only be useful to get a
    repair estimate, or in order to get more familiar with these kind of
    problems, impress your local repair person etc..

    actually tat effect will be in some red color..(assuming tat its of red color)--ur case its blue i think.. this is a equivalent solution of red..

    switch to test mode to check the red cross hair compared to the green or
    blue - if it seems out of focus, open the set and mark the position of
    the lenses. Then adjust it to tighten the line.

    Find out why the Red has shifted(pin trouble). look for bad solder
    joints on that board. Its also Possible that you have a failed
    component.

    Try re soldering the STK Output IC's very carefully.
    In a worst case scenario , you may need to change the STK that controls the Red Convergence

    Yank out the convergence board(the one that has several
    controls) on it, then you will find a few controls that have RED PIN
    (whatever). on them. Adjust them until you get it right




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Hi

you have defective convergence correction amplifier! you need a professional technician to fix it! if you need a prof.tech near you just visit www.fixya.com then go to REPAIR SERVICE and simple enter your zip code.

thanks.......

Posted on May 23, 2008

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The convergence ICs and maybe some resistors will need to be replaced. The ICs will be the more expensive parts, the resistors are very cheap and I believe Radio Shack will be able to get you everything that you need. If you have any other questions, I would be glad to answer them. Don't hesitate to ask.

thank you and good luck

Posted on May 23, 2008

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  • Benjamin Patri
    Benjamin Patri May 23, 2008

    you cold try cleaning the lenses within the tv to fix this also first before switching out the ICs

  • Benjamin Patri
    Benjamin Patri May 23, 2008

    If your picture is bowing, then you have bad convergence amplifiers, is there anything else that you did not tell us at first that may help

  • Benjamin Patri
    Benjamin Patri May 23, 2008

    Step1
    Unplug the TV from the power supply. Never
    undertake any type of repairs on electric equipment without first
    disconnecting from power. Take care in handling any electric parts, as
    some may contain a residual charge that can shock you.




    Step2
    Remove screws from the back cover and connection area of the TV. Be
    sure to put them in a safe place, or on a piece of paper with notations
    for where each one fits in the television.




    Step3
    Gently remove the back cover. Locate the mirror and three projection
    “guns,” as these are what you want to clean eventually.




    Step4
    Use a camera lens cleaning cloth (or other very soft and gentle cloth)
    to clean the mirror and lens. Gently remove any other dust before
    closing the TV.




    Step5
    Replace the back cover and screws. Plug back in the power supply.





    Step6
    Turn on the television. Check to see that everything works correctly and that your picture is now clearer.

    I don't think this will solve your problem but it should help, like I said before you will need to replace a few parts



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Posted on Jan 02, 2017

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1 Answer

Toshiba 50HX81 TV looks kind of old school 3D with red and green hue. Bad bulb? How involved is this to fix and where do I find parts?


No,not the bulb problems.Tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look like.The Toshiba tv have a "HYPER BOARD"known as a convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the convergence board,must be replaced to solved the tv convergence pictures problems.U have tools like a soldering iron,desoldering pump or desoldering braids,solders?Can u do basic soldering?Tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop,will cost u $300-350 for parts and labors.

Oct 21, 2010 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Toshiba 50HX81 only showing black and white


I bet it's a DLP TV correct?
This symptom would indicate that the color wheel has flown apart. Which results in a monochrome only image.
Color wheels are expensive and need to be replaced by a qualified service person.

Dec 26, 2009 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Information on seeting convergence for 50hx81 tv


In the customer menu select convergence with the Toshiba remote.

If it is skewed and or will not adjust you have a convergence circuit problem. If this is the case let me know and I will tell you what is involved to repair the set.

I have fixed hundreds of sets with this kind of trouble.

If this has helped you, rate this solution as I do this here for FREE.

SD TECH

Nov 24, 2009 | Televison & Video

2 Answers

Picture looks like 3D. The writing and picture look like they have a doubled effect


This is a convergence problem that can be as simple as poor connections at the convergence ICs or defective ICs. If you can solder and are comfortable working inside the set, you can probably repair this yourself. If you wish to attempt the repair, please confirm the model number so I can give you the part numbers and I will update this with additional details and instructions.

Dan

Oct 25, 2009 | Toshiba 50HX81 50" Rear Projection...

1 Answer

REd light blinking on my 50HX81 CRT TV- Toshiba,no


Check out the link below. Seems to be a power issue. Not sure if it is worth fixing.

http://www.justanswer.com/questions/1opaa-50hx81-tv-not-turn-power-button

Mar 07, 2009 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Toshiba 50HX81 50 in. RP


Change both convergence ICs STK392-110 you can get replacements at the following link and they provide free instructions with pictures so you can do the repair yourself. heres the link.
http://servicemanuals.vstore.ca/

May 06, 2008 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Toshiba 50hx81 power light just blinks


Go to Powered Products List view all in my profile and read
Toshiba entries........Let me know how it is going.........T.

Mar 15, 2008 | Toshiba 50HX81 50" Rear Projection...

1 Answer

Issues with picture after moving Toshiba 50HX81 - picture is bad


i would check for loose connections by the convergence amp ics
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 25, 2007 | Toshiba 50HX81 50" Rear Projection...

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