Question about Toshiba 42H81 42" Rear Projection Television

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TOSHIBA REAR PROJECTION TV 42H81

I am having a problem with the green, I can not converge the blue and the red to the green. The green curves out of alignment. Any suggestions? Can it be repaired? Is it an easy expensive fix?

Posted by Gary Hollins on

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  • Anonymous Nov 03, 2007

    I am having a problem with the green, I can not converge the blue and the red to the green. The green curves out of alignment. Auto focus give an Auto Focus error. When I do a manual color convergence the red and blue crosshairs are aligned the each other horiz, verically, and polarly ie. not rotated relative to each other, but the green crosshair is way above and rotated clockwise 15 to 20 degrees relative to the red and blue crosshairs. Note I ajusted the red and blue cross hairs towards the green crosshair verically and horiz but there was not enought ajustment. This was done via the owners manual procedure page 21 and 22 intitled "adjusting the color convergence". The problem seemed to happen today. I had turn the tv on so that my HDD could record a program then I muted the tv while I was out for three hours. I came back and the picture had red, blue, and green highlights. Any text had three disstinct ghosts....a red, blue and a rotate green ghost. As far as I know nobody mess with the tv.....Help

  • MARIO M Nov 03, 2007

    the blue sceen does not aline -I TRIED THE SREEN CONTROLES R DRIVE CONTROLES IN FRONT OF THE SET

  • Anonymous Nov 04, 2007

    Yes, I have the same problem. I also have the focus error with red letters.

  • vivi138 Nov 17, 2007

    yes. anyone has best solution than manual adjustment?

  • Anonymous Mar 28, 2014

    Green tent

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FIRST DO MANUALY (THE ALIGNMENT OF CRT'S)

Posted on Sep 03, 2007

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0helpful
1answer

I have a Toshiba 42H81 42 in. Rear Projection Television. The picture has shadows like you would watch a 3D image without glasses. I ran the focus on it and the vertical red has noise in it and at the end...

Please do us a favor and rate this solution after reading.

Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both. Repair kits with instructions are also avail from www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Please do us a favor and rate this solution after reading
2helpful
1answer

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.
1helpful
1answer

Toshiba rear projection tv has red and blue on the tv

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
1helpful
1answer

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.
1helpful
1answer

Red lamp is out of Focus and the red is curved on the bottom left hand side of the screen. Auto Focus shows error. What could cause this to happen.

Ur convergence is dead.Must know how to solders?Must change ICS and all it resistors in the convergence board.Tries Tv repair World.com,Tvrepairkits.com for the convergence kit.The shop will cost u $300 parts and labors.
2helpful
1answer

There is blue yellow color blur on the screen with cable or dvd

Hi,
This problem is of "CONVERGENCE". You have to replace the convergence IC's which is better to buy a new one TV, Just contact any expert and replace the convergence IC's and your TV work fine again you need not to buy a new TV.
Thanks for using fixya.
0helpful
1answer

Colours are out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.
This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
•Screen looks 3D
•Colors don't line up
•One or more colors can't be adjusted when using the convergence menu.
•Screen is bowed or warped.
•TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.

Here are some photos of convergence problems


a56fe79.jpg

6d0da0b.jpg

fcabb43.pngCONVERGENCE SOLUTION

You can see some more examples and find a fix using this link on Fixya - CLICK HERE
0helpful
2answers

Color convergence alignment

change your convergence ICs that should solve your problem.If you need more info let me know.
0helpful
1answer

TOSHIBA REAR PROJECTION TV 42H81

you have a convergence problem that will require the replacement of the convergence amp ics.
0helpful
1answer

Toshiba 42H81 42 in. Rear...

If you are referring to the convergence alignment of red,green and blue........will require technical and mechanical skills.....
1) Pull chassis
2) Replace both STK392-110 convergence IC's
3) Reset alignment as needed........................................T.
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