Question about Toshiba 55H70 55" Rear Projection Television

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Toshiba 57H81 Image issues!

When I use any other input besides the color stream 1 - 1080i input i get vertical lines on the right side of the screen. And when I play a dvd the title screen has wiggly lines in it. This does not happen when i use a 10801 signal but when i use any other one it does. Please help Justin

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Re: Toshiba 57H81 Image issues!

I am thinking surface mount caps on the Hyper board. That should definately be serviced by someone experienced with Toshiba Hyper boards.

Posted on Jul 05, 2007

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Toshiba hyper module. Vertical lines on screen.

change the 10 or so surface mounted bad filter caps in the Hyper module this set uses--the board is no longer available--it can be sent out for rebuild (not toshiba) but that is rather costly (200+)

Oct 28, 2012 | Toshiba 57H81 57" Rear Projection...

1 Answer

Color isssues with my television

The problem you having is Called Convergence,Contact me while im online And ill tell you about it ttech

Jul 22, 2007 | Toshiba 57H81 57" Rear Projection...

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The color seems to be off. No red, and lots of purple. This is a Toshiba 57H81 wide screen big box tv. It was purchased in 2002.

Could be a bad board within the tv but it is sometimes the source input meaning it could be dvd player, cable/satellite box, etc causing the loss of color but it is unlikely. I have one of these tvs and they use red green and blue projectors to reproduce the colors so when the red projector fails then you get purple which is green and blue colors combined without the red. I have found it to be sometimes a bad connection inside the tv and I found insects such as roaches inside others. Using extreme caution when opening the rear cover of any tv due to dangerous and fatal high voltage. You might find that simply cleaning out the inside of tv and reseating all the connectors might resolve your issue otherwise you would have haul this tv to a repair shop where you pay half the price of a new flat screen lcd for just repairing this tv which will probaly have another color go out next month.

Aug 15, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Red color convergence on Toshiba 57H81

Often convergence issues do not require the entire board to be replaced. You can resolve it by replacing the convergence ICs. The part in question is STK392-110. You will need two of them and they cost around 10$ each. But replacing them is a pretty complicated procedure and I would not suggest it to someone without prior experience. A service manual should get you started in the right direction if you are planning to do this yourself.

: Disconnect from the power supply before you start the repair. Also read the legend, the hv circuits are denoted by a special symbol, so you will know what you shouldn't touch.

You may also need to replace the nearby resistors that may have popped the IC in the first place. Read the service manual for further details.

Good luck,

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

1 Answer

Black, Red and yellow triangle in upper right corner of the scrn.


Jan 19, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Vertical blue line not in vocus

It sounds like you lost a convergence amplifier. There is also the possibility that a resistor on the main circuit board that goes to the horizontal control circuit for the blue CRT/deflection yoke may have a cold solder joint. These circuits generate a considerable amount of heat and can weaken solder joints over time. Try bumping the side of the television and see if the blue line changes or if the blue color returns. If so, then it may very well be a cold solder joint that needs to be touched up. This is one of the first things that an electronic tech tests for - sounds crazy but I've fixed literally thousands of televisions this way. Good luck.

Jan 05, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Toshiba 57H81 Color Problem

sounds like your green tube is set to high.
take the front cover off and the plastic cover under that
you will see a black box about 6x6 with 6 controls one is for focus the other is for intensity
here a guide for sony but yours should be close.

Mar 14, 2008 | Toshiba 57H81 57" Rear Projection...

1 Answer

Black Screen with vertical lines down the side?

· Which models are affected with the "flicker" problem?
A1: There are 12 models in total: KDP57XBR2, KDP65XBR2, KP46WT500, KP51HW40, KP51WS500, KP57HW40, KP57WS500, KP57WV600, KP57WV700, KP65WS500, KP65WV600 and KP65WV700.

Jan 03, 2008 | Sony KP-57HW40 57" Rear Projection...

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Wavy picture except when displaying a 1080p image

Elsewhere! Bad hyper board =bad caps on board need replacement = find a different tech who has heard of this repair or
have him research fixya / Toshiba/ 42H81 / hyper board ......T.

Oct 14, 2007 | Toshiba 42H81 42" Rear Projection...

3 Answers

Two vertical lines one at 1/3 screen the other at 2/3's of screen

I have not fixed it yet. But I have identified the chip that is causing the problem. If you have a service manual scan it and post it please, so I can show you the chip.

Aug 04, 2007 | Toshiba 57H81 57" Rear Projection...

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