Question about Toshiba 42H83 42" Rear Projection HDTV-Ready Television

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I have a Toshiba 42H83. When adjusting the convergence The blue line on positon #8 (lower center) is diagonal. All the other positions are fine. We just moved so i wonder if that had anything to do with it. Any suggestions? Dean

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David Duncan

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If you just moved it is very possible that you had some week solder break loose at your convergence IC. Reflow the solder on all pins and see if that does not fix your problem.

Posted on Jul 15, 2011

  • Anonymous Jul 15, 2011

    Thank you i'll check that out. Dean

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Toshiba 42h83.... The blue convergence will not line up. The horizontal will but the vertical will only move so far. when touch focus starts the reds and greens are perfectly strait the blue vertical is...


bmarino18,

Initially I would have told you to replace the convergence ICs but after reading your post carefully I think you could have a problem with the convergence box. The lines can only be bent/curved for two reasons. One - the yokes are bad causing an undue strain on the power supply and not being able to correct the problem. Two - the convergence box/board is bad and is not holding the settings causing the curve you see. I cannot tell you which problem you have. You wil have to determine this. I do have a tip at http://www.fixya.com/support/r4273935-replace_digital_convergence_box which may be helpful.

Thanks for using FixYa and for the great rating.

hardrocko

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You have one or more bad convergence amplifiers. Best to replace both convergence output ICs as well as check low value resistors associated with them.

Oct 16, 2009 | Toshiba 42H83 42" Rear Projection...

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How do i get the blue and red lines to line up


They are adjusted through the convergence control in the menu.If they do not adjust, the convergence IC's are bad and need to be replaced.
Call a good TV Tech.

Jul 30, 2009 | Toshiba 42H83 42" Rear Projection...

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I have a yellow line on the right side of my Toshiba 50 rear projection TV and yellow shadows around people


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thanks doctor video good luck since 1987

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Convergence problem with Toshiba TV 42H83


Your TV most likely has a Convergence Chip 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.
  • Screen is bowed or warped.
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2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.

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