Question about Toshiba 50HX81 50" Rear Projection Television

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Color Convergence Error

The color convergence changed suddenly and I cannot get them aligned -- tried the convergence from the remote as well as the manual controls on the projectors... Further, some of the GREEN crosses are not square in that they are slightly "twisted" / not straight?

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  • Ytee Oct 18, 2008

    I seem to have the same issue however it is the red crosses that can't be aligned and are twisted on the outer corners of the screen. Is this an IC issue too? Are these ICs relatively easy to change and what setup other than of course convergence is required after changing them?

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  • Toshiba Master
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You need to replace both convergence ICs they are STK392-110 you can get repalcements at the following link with free instalation instructions.
http://servicemanuals.vstore.ca/

Posted on Jun 28, 2008

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Posted on Jan 02, 2017

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2 Answers

Tv works but picture color is off and its kinda dark looking there is no duel image so i know the color tubes are ok but there is a problem it almost looks like someone took a magnet to it


You have two problems, you have a convergence problem, the convergence board needs repair, and the other problem is the coolant needs change in the guns, (CRT's) and you are looking at 500 on repairs, you would be better off getting a new LCD.

Mar 02, 2011 | Philips 43P8341 43" Rear Projection...

1 Answer

The picture all of a sudden became blurred , color convergence is not aligned and there is a pink wave at the top left of the screen and a green wave at the bottom of the screen. When the color is adjusted...


Tv have convergence problems,it dead.Colors lines R,G,B don't aligned.The tv convergence board is dead.The 2 STK convergence ICS and some or all it resistors are dead,these parts must be replaced to solved the tv pictures covergence problems.The shop,will cost u $300-350 for parts and labors.

Sep 18, 2010 | Sony KP-43HT20 43" Rear Projection...

1 Answer

Color lines need to be aligned. Color convergence is off


IF THE CUSTOMER CONTROLS DO NOTHING THEN YOU WILL NEED TO MAKE SURE THE CONVERGENCE CIRCUIT IS WORKING. THEN YOU WILL NEED THE SERVICE CODE AND THE ORIGINAL REMOTE AND CONVERGENCE ACCESS CODE TO ALIGN IT.

Dec 27, 2009 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Akai PT5499hd that has suddenly lost color alignment


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

Dec 23, 2009 | Akai PTH5498 54" Rear Projection...

1 Answer

Color alignment


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.

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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.

Mar 29, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Color out of convergence.


Good Day;

Sounds like the CONVERGENCE IC has failed >STK-110 > 267P155010. TV only Uses one.
Good Luck, big IRISH.

Aug 31, 2008 | Mitsubishi WS-55511 55" Rear Projection...

3 Answers

No color adjustment


51f500_51_in_rear_projection_hdtv_190581.jpg

Problem with Hitachi 51F500 51 in. Rear Projection HDTV-Ready Television
i want to learn how to do convergence on my tv its a hitachi rear projection i have problums with colors not aligning,could you lead me in the right direction ps: i don't have the remote so i

can't magic focus

Posted by avatar13.jpgejaparks on Mar 03, 2011

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Solutions (1)

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 www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example photo.... louis66_0.jpg

Jul 04, 2008 | Philips Magnavox 9P6034C 60" Rear...

2 Answers

Trouble Aligning Colors


If the convergence is missing in the menu in screens,you have a bad reg ic on the convergence power supply the part number is 215530,the power supply is located on the black plastic above the right module with all the heat sinks

Nov 15, 2007 | RCA P56930BL 56" Rear Projection...

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