Question about Toshiba 42H81 42" Rear Projection Television

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STK192-150 didn't fix it

Red convergence won't go left or right. replaced both STK192s. Is there any other item on the board that can be replaced that causes this or is there a problem on another board?

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Re: STK192-150 didn't fix it

Proper sub IC = STK392-110T (tosh) or upgrade STK394-160 in
Hitachi brand, which is what I use for reliability. Your lack of movement is probably a bad resistor of low value = check all with
meter and / or look for darkened, discoloration of resistor.....
Also,solder wire jumpers 008,010,017,048 and 600 ( Prevent )

Posted on Nov 23, 2007

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How do I adjust the manual convergence? I am in the settings, but my TV is not letting me adjust anything. I chose the "reset to factory" choice, but that didn't fix the red/green shadows

Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo.... louis66_0.jpg

Aug 27, 2011 | Philips Magnavox 51MP392H Rear Projection...

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I cant line the red and green crosses up left and right but i can move them up and down. I have two pics in diferent colors

The tv have a convergence problems,it is dead.Tv have colors lines like R,G,B mis alignments,have colors pictures shadows or 3D pictures look alike?Yes,than the tv convergence board it is dead.The tv convergence board must require replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop will cost u like $300-350 for parts and labors.

May 09, 2011 | Philips Magnavox 51MP392H Rear Projection...

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The left side of the picture has red and green stripes and ghost images. The right side does not have this problem, but the picture is not quite right. The convergence chips were replaced two years ago and...

That sounds like the convergence problem I had about a year ago, and like you, I replaced the convergence chips and that fixed the problem. It's cheaper to replace the chips if you do it yourself, but maybe not if you send it out for repair. If you can find an exact replacement board, that would fix it too, but I wouldn't necessarily expect it to last longer. The advice I read on replacing the convergence chips in my rear projection TV was that they would last 2 or 3 years and then need replacing again. So you're within that range.

Feb 27, 2010 | Sony KP-51WS500 51" Rear Projection...

1 Answer

Can not align red even though convergence board WS-55819

Did you replace the center board with the STK-392-570 chips or the Digital convergence board mounted on it?

98% of the time if you have a convergence problem it is on the center board---the small board on the left under the metal shield box stores and controls the convergence of this set.


I am here to help----I have fixed hundreds of Mitsubishi sets with convergence troubles.

Regards, SD TECH

Oct 28, 2009 | Mitsubishi WS-55819 55" Rear Projection...

1 Answer

RCA D61W20 Projection Television with ITC222 chassis Here is the whole thing , took this machine apart last night the mirror is in good shape cleaned the lenses, picture is much brighter now! However still...

unfotunatly the itc222 has no convergence ics it uses a series of trsansiitors. the fact that u have some areas of the screen clear may mean you need a technician to do a service alignment. when you go into setup does the convergence crosshairs move up and down and side to side on both the blue and red? if they do their may not be a problem with the power board. ONe more thing if you replace this board you will still need a technician to do a service alighnment

Jun 16, 2009 | RCA Projection Televisions

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Convergence 3d Image

ok.... when you go in too align the red.. you say that the red wont move.... how about the blue.. does the red move up or down left or right does the blue move up or down left or right.. this is an indication of a faulty convergence amplifier. there may be a bad connection on this generally we replace this cuircit when it happens. things that can be checked is the flat ribbion cable from the main (green) board to the convergence board. this is the one over the top of the main one that has several metal fin(HEAT SINKS) on it.

Mar 27, 2009 | GE D52GW12 52" Rear Projection HDTV-Ready...

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RCA P52930BL Setting Green Convergence

check conector j19105 to be seated properly.
if this dosent fix it
look in the uper right hand side of light box in the back of the set
you will see the convergence Power supply, remove and replace it.
save your self time and just replace the board.

Jan 12, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Convergence problem?

The convergence anp ICs are usually what go bad in that unit. They are two ICs both are STK392-040 and they are at board location ICZ103 and IZC103 on the Sub Board attached to large heat sinks. You can get replacements with free installation instructions and free on line tech support at the following link.
let me know if you need further assistance.

Apr 10, 2008 | Samsung HCL4715W 47" Rear Projection...

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