Question about Toshiba 42H83 42" Rear Projection HDTV-Ready Television

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Toshiba 42H83 My toshiba 42H83 recently starting having an alignment problem where I can see a shadow image in red out of align of the rest of the picture. Is this an easy fix?

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  • Mark Wensyel Sep 29, 2007

    Thanks.

    I ended up paying for it to be repaired. Found a place that was very reasonable.

  • Stampede1 Nov 13, 2007

    I'm seem to have a convergance problem, but I tried to align the the tv manully and it would not move. It seems to be manily on one half of the tv. Shadows and wave on one side of the tv. Tried Touch Focus and the manual and the crosses would not line up.

  • RC hobby Nov 23, 2007

    Picture shows red hase ; in Touch Focus mode the red line is wavy; reports " Touch Focus error ". Please advise

  • jczooman Jun 14, 2008

    The same problem focus error

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Most projects in life are "easy",if you know how.Chassis will have to be pulled,convergence IC's replaced w/top quality parts to prevent recall.Some excellant soldering will be needed for prevent maintenance,for instance,the steel jumper wires feedig b+ to convergence IC's. RE-align in servicer mode==final step.

Posted on Sep 29, 2007

  • Vista Electronics Oct 19, 2007

    Happy to hear you got a reasonable repair--sounds like the work done was along the lines of what I described--that being the case, would you consider up-grading my rating?....Thanx...T.

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2 Answers

Our tv just started having a fuzzy image and the auto focus function aborts during the red color alignment. is there a manual alignment I can do to fix it.


What does this fuzzy image look like? Does it have ghosting shadows. Of course it is possible to align red manually from the convergence menu. But first lets confirm that it is indeed a convergence related problem.

Aug 18, 2010 | Samsung HCL552W 55" Rear Projection...

1 Answer

The screen seems to have two of the same image, green and red.


Yes.
The fix is to replace the two Convergence IC's( STK392-110's) with STK392-150's. They are located to the right side of the chassis and mounted to large heat sinks. Be also on the look out for some burnt resisters and or discolored resistors that failed becuase of the IC's failing. These would be located just to the left of the heat sinks. If they are burnt or severly discolored, you will need to replace them with the exact valued resistors. In this high current circuit it is a must.
I hope this helps,
Skyassoc

Jan 07, 2010 | Hitachi 60FX32B 60" Rear Projection...

1 Answer

Since this morning my Toshiba 42H83 TV's picture is blurry and has red and green shadows. We have checked all connections and unplugged all devices.


Go into the customer menu for the TV. Select convergence and if you find the colors are skewed or will not align you have a convergence problem.

I am going to post a few photos here of what this looks like--not all will look the same but you will know if it is your problem.

If it is your problem I can tell you what is needed to fix it--for many it can be a do it yourself repair.

If this information helps you rate this solution as I do this here for free.

SD TECH


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Dec 23, 2009 | Toshiba 42H83 42" Rear Projection...

1 Answer

My picture suddenly has "ghosting" or "Shadowing." Cable is fine in the other room and I also tried the picture through my dvd. same thing.I tried the touch focus but this did nothing.


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,Pioneer2_bing.gif 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.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 17, 2009 | Toshiba 42H83 42" Rear Projection...

1 Answer

Toshiba 42H83 Touch Focus Problem


I just got finished repairing the same model . The convergence modules are bad cost of repair is 250.00 for a service center to fix. My advice would be call your local service center tell them what i told you bad convergence ic and ask them how much they charge,


thanks doctor video good luck since 1987

Jun 14, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

Double outline "red" around images


Hi you have bad convergence ic stk modules ,Cost for repair center to fix is 250.00. call your local repair center ask there prices on convergence ic repair. It is a very common problem every 3 to 5 years .Our service center does a lot of these.


thanks doctor video 1987

Jun 01, 2008 | Toshiba 42H83 42" Rear Projection...

1 Answer

Toshiba 42H82 convergence problem


Replace STK convergence IC's w/OEM or better parts.Senior tech soldering ability needed. Ex==Steel jumper wires feeding b+ to conv. IC's need resolder to prevent call-back.Also, best re-alignment done in service mode==consult service literature.

Sep 19, 2007 | Toshiba 42H83 42" Rear Projection...

2 Answers

Toshiba 57h82


your convergence amp ic's./if you want to cheat/align the other two colors and manualy move the green yoke rings on the green picture tube neck so the green cross aligns with the red and blue.,they shuold form white when all three are aligned,on top of each other.

Sep 13, 2007 | Toshiba 57H82 57" Rear Projection...

1 Answer

42 inch Toshiba 42H82 rear-projection TV


Very rare to have a "tube" problem--is the real issue red/green/blue mis-alignment?? If so,please read solutions written by me for same or similar problem,includes many different Tosh models.

Aug 29, 2007 | Toshiba 42H83 42" Rear Projection...

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