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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  • 398 Answers

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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Posted on Jan 02, 2017

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1 Answer

Samsung plasma tv has vertical lines


The most cost effective thing to do is just replace the TV. The cost to repair will be close to the cost of a new LED flat screen, they are very cheap now.

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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...

1 Answer

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...

2 Answers

Vertical band appeared after just 6 weeks for no apparent reason. It shows a side section of the picture in mirror image form and is directly down the centre of the screen


the problem here is the Lcd controler or T-con board. The problem is Toshiba does not alway sell the board seperately you may have to buy the complete LCD panel Call toshiba Tech support or check on their web site for you particular model

Dec 09, 2009 | Toshiba REGZA 42 in. Flat-Panel LCD HDTV

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.
https://www.completeservicemanuals.com/toshiba/crt-projection-television/57h81-service-manual/prod_1128.html

PS
: 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,
Sai.

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

1 Answer

Fine color vertical lines in right and left side of screen


One of two things could be wrong.. One is the digital board and or connector. the second is that the LCD display is going bad..

Jan 28, 2009 | Toshiba REGZA 42 in. Flat-Panel LCD HDTV

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...

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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