Toshiba 42H83 42" Rear Projection HDTV-Ready Television Logo
Posted on Mar 12, 2010
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Where can i purchase convergance amps for my toshiba tv and how difficult are they to install

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  • Expert 60 Answers
  • Posted on Mar 12, 2010
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Joined: Aug 19, 2009
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You have one of two problems. Sometimes both.

Problem #1) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

where can i purchase convergance amps for my - 578ba6c.jpg
TV set after fluid change




2c07611.pngSolution #1


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Problem #2)

Your TV may have a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem



  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.

  • 3dc9420.jpg
    645fba6.jpg
    0dcec37.jpg
    Here is a quick test....

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

    Try to adjust the red and then the bwhere can i purchase convergance amps for my - 0667c5f.pngence.

    You should be able to move them up, down, left, and right.

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

    0667c5f.pngSolution # 2

    You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can hire a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a step by step picture instruction guide, original OEM parts, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

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Hello, I purchased and installed one

You will need a original remote to make the changes to the multipoint and single crosshatches. Do a google search for remote controls to find the Philips remote.
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I can't get the red gun on my toshiba 50A61 tv to center with the green & blue

Ur convergence is dead,must repaced parts.Know how to solders?Buy a convergence kit.Tries Tv repair World.com,Tv repair kits.
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I need an IC Part for the TV. Are these expensive parts and is it a difficult repair job ??

I asume you're talking about convergence IC's? The IC's themselves are about $50.00 total
convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

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Blinking power light & black screen on toshiba 57h81

This TV could have one of several problems including but not limited to; convergence IC's,bad capacitors, shorted horizontal output transistor. Call a good TV Tech. Check with the BBB before you decide on one.
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TV will not turn on

the convergence amps might need resoldered. thias is a common problem after the run for a few years
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Convergence amp

You usually have to replace the two ICs at the same time along with resistors to get the longest life from the Convergence amps. You can get the repair kit for your model at the following link which contains both ICs and all 6 resistors plus instructions with pictures that explain how to do the repair yourself. Heres a link to the correct kit for your model Toshiba.
http://servicemanuals.vstore.ca/product_info.php/pName/toshiba-50h71--50h81-convergence-repair-kit/cName/convergence-repair-kits
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Convvergence problem w/ Toshiba 50H82

You need to replace following ICs, may be 2 pieces in your tv for convergence problem.
IC, STK392-110T

Toshiba Part Number: 23135090X
Please search on net for availability in part stores
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Toshiba 42H83 projection TV red convergence issue

the Convergence Ics are STK392-110 ICs you can get replacement Ics at the following link and they provide free instalation instructions.
http://servicemanuals.vstore.ca/
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Toshiba 50H81 manual convergence

are you sure it's yoke? these are know for bad convergence amp ic's
other wise it's a screw and glue holding the yoke in place loose the screw and try to break the glue with out breaking the plastic on the yoke, the other thing you can do is adjust the magnets which have tabs on the yoke. i would mark the position's of everything on the tube with a sharpie so you can get it back to start.

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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