Question about Toshiba 42H81 42" Rear Projection Television

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Convergence problems My Toshiba 42H81 started to cast a blue shadow onto every object a few weeks ago. I've adjusted the convergence before without issue, however, when I tried this latest time the blue cross will not move. All 10 positions this is the case, I don't know what to do next??

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You need to replace both of your convergence ICs they are STK392-110 you can get new replacements at the following link and they provide free instalation instructions with pictures. Heres the link
http://servicemanuals.vstore.ca/

Posted on May 30, 2008

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Shadowed picture and red/blue convergence is far off


This is a convergence failure, common on this type of tv. here is a tutorial I made:
http://www.fixya.com/support/r5001731-convergence_diagnosing_convergence
Let me know if I can be of further assistance.

Sep 09, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 42h81


Heckler, your tv has blown parts in the convergence circuit so you need to stop pulling plugs or you will do more damage to the set. The convergence IC`s will need to be replaced and probably 1 or 2 support resistors, Then the set will have to be re-converged, the shop you talked to is correct that it`s a common problem, mine failed 8 months ago in my 53" Hitachi. $400 to do that repair is pretty pricey BUT it really depends on where you live, Major sized city`s charge big rent, taxes are higher etc. etc. so tv shops overhead is higher, I would get out the phone book and start calling all the shops in your area for price quotes. Any questions??? email me back, hope this helped, Happy Holidays BMW Rider

Dec 01, 2007 | Toshiba 42H81 42" Rear Projection...

1 Answer

My tv toshiba 43n9uxa has a red shadow to images and seems tilted on the edges with blue hue


Ur tv convergence are dead.Must know how to solders?Must replaced 2 STK convergence ICS,and some or all it resistors.Tries websites like Tv repair world.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost $300-350 for parts and labors.

Apr 26, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

My picture is wavy and out of focus. when i touch the auto focus it goes through the function but ends with failure. it is a toshiba 42h81.


The most likely cause is shorted convergence chips and possibly a few pico fuses.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony,Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 14, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba model 42H81 projection tv receiving blue and yellow shadows on screen.


Convergence is dead.Know how to solders?Must replaced the 2 convergence ICS and all it resistors.Tv Repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300 for parts and labors.

Feb 06, 2010 | Toshiba 42H81 42" Rear Projection...

1 Answer

Toshiba 53h71 Blue Shadow/Shade problem


If the shadow is off to one side then it's a convergence adjustment. If it is a blue outline it may be your blue focus. There should be focus knobs behind the speaker cover. They are usually covered by a piece of black tape. The convergence screen should have a prompt for changing the color you are controlling, possibly exit button. Toshiba has several of the older owner manuals on their site as archived models.

Aug 31, 2009 | Toshiba 53H71 53 in. Rear Projection...

3 Answers

Blue shadow


If the blue shadow is convergence you should have an option for convergence adjustment via the remote control to converge the blue onto the green. If it doesnt move then its probaly a IC problem. What make and model set do you have?

Jan 02, 2008 | Projection Televisions

1 Answer

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...

2 Answers

Toshiba 56H80 Convergence Problem?


There are 2 large IC's in your set and one of them has burned out. These are called convergence output IC's and are usually the STK392-010's. A good idea would be to go ahead and replace both with the newer, upgraded STK392-150 IC's. A good tech can change those IC's in about an hour and a half, and when I do a housecall for a set like that I charge $150, but shops in your area will vary so be sure to ask around.

Sep 07, 2007 | Toshiba 56H80 56" Rear Projection...

1 Answer

Toshiba 42h81 picture shifted


Are you still working on your set? I can help......T.

Jul 31, 2007 | Toshiba 42H81 42" Rear Projection...

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