Question about Toshiba 42H81 42" Rear Projection Television

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Bottom screen slanted failing to converge lines blue line on 7 8 9 severely tilted

Help me realign the picture cos manual not clear on hw to deal with the problem.pictures on the screen with shadows and a blue slanted line

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Posted on Jan 02, 2017

MikeNJ1964
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SOURCE: 43H70 Blue Convergence out of line and will not line back up

If the blue colors will not line up, and the blue appears to sag inward from one or more sides, then you can bet that one of your convergence IC's has either cracked loose or burned out. The IC should be resoldered or replaced and the convergence realigned by someone experienced with projection TV convergence circuits.

Posted on Jul 15, 2007

MikeNJ1964
  • 398 Answers

SOURCE: 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.

Posted on Sep 10, 2007

  • 375 Answers

SOURCE: 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.

Posted on Sep 13, 2007

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SOURCE: 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.

Posted on Sep 29, 2007

Slinteriors
  • 8617 Answers

SOURCE: Toshiba 50HX70 Convergence reset

You will need to replace the convergence ICs. You can order them at this link and they provide free support as well as installation instructions with pics so you can do the repairs yourself. You will need to replace both convergence ICs
http://servicemanuals.vstore.ca/

Posted on Mar 30, 2008

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The picture slants from left to right the top has a down slant and the bottom has a up slant not bad but enough to see it


All 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.

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

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.

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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

Jan 08, 2011 | Philips 60PP9363 60" Rear Projection...

3 Answers

Blue lines .


the convergence IC's are failing to perform properly...

you might need to replace them

Mar 26, 2008 | JVC AV-65WP74 Rear Projection Television

2 Answers

Multipoint blue convergence cannot be adjusted


Sound like you need to replace the STK's and any blown pico's on convergence board.

Jan 20, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

There is a blue wavy line from the left top to the middle of the top of the screen. The area above the line is yellowish. Below the line the images are clear until the bottom third where everything has a...


Convergence ICs have failed. The Sony type 1 convergence repair kit available from www.tvrepairworld.com is the correct kit for your model. The kit contains the parts and the CD with instructions.

Jul 16, 2010 | Sony KP-46WT500 46" Rear Projection...

2 Answers

Convergence lines are SLANTED. Red line is above


Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Apr 26, 2009 | Hitachi 53FDX01B 53" Rear Projection...

1 Answer

Convergence lines are SLANTED. Red line is above horizontal center on left side on screen and below horizontal center on the right side of screen. Also left of Vertical center at the top of the screen and...


did you check the six 3.5 pico fuses that are next to the ICs? They will often be open ( blown) when the ICs fail. Also check the two 5 amp IC protectors on the G board as those protect the two ICs so its possible they have blown also a 5 amp pico can be substituted for the two IC protectors.

Apr 26, 2009 | Sony KP-46WT500 46" Rear Projection...

1 Answer

Tilted picture


You must be placing the TV near something Magnetic, Speakers, etc. This would account for the green in the corners. The tilted picture is most likely the yoke in the set has moved during rough handling. The first issue can be fixed with a degausssing coil, the second requires a technician to manually realign the yoke assebly and perform a convergence on the set.

Apr 20, 2009 | RCA TruFlat 27F520T 27" TV

1 Answer

I have a red and blue shadow in my picture


i think you need a new convergence board they rin from about 88.00 to about 140.00

Sep 08, 2008 | Akai PT5598HD 55" Rear Projection...

1 Answer

43H70 Blue Convergence out of line and will not line back up


If the blue colors will not line up, and the blue appears to sag inward from one or more sides, then you can bet that one of your convergence IC's has either cracked loose or burned out. The IC should be resoldered or replaced and the convergence realigned by someone experienced with projection TV convergence circuits.

May 21, 2007 | Toshiba 43H70 43" Rear Projection...

3 Answers

PT 47 convergence IC's? box? both?


Always suspect the IC's first, digital convergence prblems are actually pretty rare IC's go everyday. I'd check partsore .com Generics usually work fine, they are probably STK392-110's but check to make sure.

Apr 16, 2007 | Panasonic PT-47WX49 47" Rear Projection...

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