Question about Toshiba 57H82 57" Rear Projection Television

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57H82 convergence issue, but not STK IC

Hi, Acquired a 57h82, that has a convergence issue. The picture is ghosted in red and the red convergence cannot be adjusted left to right. Up and down is ok. I replaced both of the convergence chips, but it made no difference. I assume as I did the chip replacement and the issue is still exactly the same, I did it ok. Does anyone have any other ideas... I have heard that some resistors on the board can be a problem, and should be replaced, but which ones and how do I check them? Thanks

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Re: 57H82 convergence issue, but not STK IC

There are probably eight to ten resistors sitting behind the heat sincs the Chips mount on. You will need an Ohm Meter the easiest way to check them is just compare them with one another, you will see a pattern then you will see one that is really high or open (infinity) that is the one to change check the coor code on it to be sure you replace it with the right size

Posted on May 06, 2007

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Doesn't diplay

Check for solder bridge along the convergence ic's. Check low value resistors in the circuit. Make sure you have your +27 and -27 vcc going to the ic's.

Nov 20, 2011 | Toshiba 57H82 57" Rear Projection...

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The colors are not matching up it will not allow auto focus or manual, the red line is not straight? Toshiba 57H82 rear projection t.v.

The convergence circuit has failed in the tv. These are the big STK chips on the circuit board. It typically costs $300 to fix at a TV service center. Requires replacement of two STK chips, some resistors, some fuses and then re-alignment of the CRTs within the service menu.

If you have proper soldering tools and can download the service manual, it is possible to do the repair yourself.

If you do not have any electronic background whatsoever, I do not recommend a person to attempt it.

Feb 15, 2011 | Toshiba 57H82 57" Rear Projection...

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Toshiba projection tv model 57H82 color convergence is off. tried the TouchFocus and get and error. tried manually but the red will only move up and down. i need it to move left and right.

OK, the problem is one of the STK392-110 convergence amps has died. It is rare that both die at the same time, so either vertical or horizontal will go out, but not both. Also look for an open fusable resistor near said IC.

May 28, 2010 | Toshiba 57H82 57" Rear Projection...

1 Answer

Toshiba 57H82 entire screen flickers. Not clear. mult images

Sounds like the Hyper board is needing replacement very common problem for toshibas.

Dec 27, 2008 | Toshiba 57H82 57" Rear Projection...

3 Answers

Red Ghost

This may be a convergence issue but it is difficult to determine with that description. Watch this video and see if it will help you determine if you have a convergence problem or possible something else.

Aug 10, 2008 | Toshiba 57H82 57" Rear Projection...

2 Answers

Convergence STK ic parts?

Yes your set uses two STK392-110 convergence ICs you can get replacment ICs at the following link with free instalation instructions.

Aug 06, 2008 | Toshiba 57H82 57" Rear Projection...

2 Answers

Toshiba 57H82 resistor value???

When I get to work in a few hours, I will get the value for you.
Yes,you can use a regular 1/4 watt resistor and you might be
able to measure the value of it's twin in the other IC circuit....T.

Jan 21, 2008 | Toshiba 57H82 57" Rear Projection...

1 Answer

Convergence problem

Blue convergence IC is bad! Blue CRT OK!

Required for repair---pull chassis,replace STK392-110 X 2.

Re-assemble,adjust convergence as needed.

Oct 12, 2007 | Toshiba 57H82 57" Rear Projection...

1 Answer

Toshiba 57H82 Convergence issue

more info here:

May 05, 2007 | Toshiba 65H82 65" Rear Projection...

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